Category Archives: Climate Change

Urban October, 2023

Urban October: origins

The early 1970s are when true modernity began. The post-war economic boom had created new conditions, civilian Earth surveillance and communication satellites were up and running, climate change and mass extinction were coming into view, and humanity was migrating to cities. Many key environment and development indicators and institutions tell their stories from then. In 1975 the new UN Environment Programme was tasked with midwifing an urban-specialised body which later became UN-Habitat. A decade afterwards, UN-Habitat was given World Habitat Day (WHD) at the start of October to mark its concerns. And a decade after that it was given World Cities Day (WCD) at the end of October to mark its progress. The month of urban focus in between became known as Urban October.

Urban October: purpose

The aim of Urban October is to encourage everyone to think about the viability and liveability of our towns and cities, and how they do or do not, or can, or should meet the needs of all their inhabitants, sustainably, inclusively, and without imposing harm on people elsewhere. Urban October also reminds us that we are all stakeholders in adapting our cities and towns to meet the needs of everyone, both now and in the future. And this calls for informed participation in decisions about cities’ needs, ecological footprints, vulnerabilities, and systems of governance.

We are becoming an urban species

More than half of all people now live in cities and towns – our new habitats – and this proportion may reach two-thirds by 2050 as small cities grow in developing countries. We gather in cities to benefit from their density of people, jobs and opportunities to interact with others. A result is that cities are potent and influential aggregations of infrastructure and industry, as well as human and financial capital. But with concentrated populations that depend on imported ecosystem products like food and clean water, and on past assumptions of environmental security, they are also increasingly vulnerable in a changing world.

Cities are on the front line of global heating

Many cities are already facing the effects of climate change, including heat-waves, water stress, flooding, storm damage, and new diseases, all on top of the health effects of urban lifestyles, poverty and poor nutrition. And the vast majority of urban areas are coastal, putting them at particular risk from rising sea levels and storms powered by the ever-greater heat content of the oceans. Ironically, cities also produce 70% or more of the world’s GHG emissions, especially from the transport, buildings, energy, and waste management sectors. But the future of the living world depends on quickly reducing the concentration of GHGs in the air. This calls for rapid net emission cuts by major emitters (like cities), accountability to vulnerable electorates (like city dwellers), and leadership supported by access to key sources of knowledge (like urban academia), capital (like urban businesses), and the levers of power (like urban elites).

Urban October: historical themes

Each World Habitat Day, and since 2015 Urban October as a whole, has a distinct focus on a certain aspect of urbanisation and its consequences and implications. The theme of the first WHD, in 1986 and hosted by Nairobi where UN-Habitat is based, was the right to shelter. UN-Habitat returned to this again in 1987 and 1990. Other themes have included planning our urban future (1997, 2001 and 2009), urban safety and liveability (1998 and 2010), women in urban governance (2000), water and sanitation (2003), and climate change (2011). Since 1989, alongside WHD, WCD and Urban October, UN-Habitat has maintained a Scroll of Honour for people, places and initiatives that have made outstanding contributions in areas such as housing, homelessness, post-conflict reconstruction, and improving the quality of urban life.

Urban October: recent themes

The 2022 theme was growing inequality and vulnerability driven by Covid, climate and conflict. The pandemic and multiple conflicts (in Ukraine, Ethiopia, Yemen, Haiti, Myanmar, and elsewhere) had reversed years of progress against poverty, with tens of millions blocked from advancement or thrown back into unemployment and destitution. And the 2023 theme is investment for resilient urban economies. Here the aim is to promote full recovery from the economic shocks of Covid and conflict by boosting economic activity and sharing experience on tackling inflation. Attention will likely soon return to climate change, following the many weather-related disasters recorded globally in 2022 and so far in 2023.

Cities comparing notes

The immeasurable adaptability of our species is increasingly shown through solutions to the special challenges of urban life and the special needs of cities themselves. Because all cities are built by only one species (us), they differ only superficially (in the great scheme of things) and have many major features in common. This allows city administrations to learn from each other, and their ability to do so is greatly enhanced by networks such as United Cities and Local Governments, C40 Cities, and the Global Covenant of Mayors.

Sustainable landscapes with cities in them

Every city needs healthy farm, catchment and wetland ecosystems nearby, for food and water supply, waste management, environmental security, education and recreation. So city administrations should care for upstream and downstream ecosystems, and the people who live in them, as key allies in meeting the needs of their cities. This often requires the careful and ecologically-informed negotiation of landscape-scale agreements between cities and their surrounding ecoregions. And cities are important habitats for many wild species. Rivers often run through them, offering beauty and biodiversity to city-dwellers, while parks and gardens can be constellations of connected ecosystems that sustain an immense diversity of wildlife. Urban ecology is a key part of our heritage and future, where peace with nature can be restored and maintained for the benefit of everyone and everything.

Self-sufficient cities?

As I explain in my book Surviving Climate Chaos, there is no such thing as an entirely self-sufficient city. But a city can be viable as an open system that draws on resources without harming the systems from which they come. This usually means paying a price for imported goods and services that is satisfactory to producers, and also sufficient to pay for the systems concerned to be managed sustainably. Balancing this equation requires skill and knowledge, but can also be made easier if a city minimises its demands for imports, for example:

  • by securing local food supplies from intensive organic horticulture on roof-tops and in private gardens, public parks and community allotments, and from neighbourhood and household hydroponic, aquaculture, microlivestock and invertebrate protein farms;
  • by promoting local water conservation through household and neighbourhood rain harvesting, water purification and water recycling;
  • by using local sources of biogas and fertiliser from household and neighbourhood waste and sewage fermentation, and obtaining and distributing energy through household and neighbourhood biomass, solar, wind and geothermal energy systems;
  • by harnessing personal energies and social behaviour, such as through local currencies for trading time spent in social care, labour commitments and local produce, or through self-organised local networks like residents’ associations; and
  • by re-designing city systems to be much more liveable, efficient and self-sustaining, though public transport, architecture, pedestrianisation, etc., and with the support of locally-accountable self-government with sufficient powers to make a difference.

Future cities?

In a 2085 scenario, my book on water describes a world in which “City administrations had learned to strike long-term deals with catchment dwellers to pay a fair price for catchment services, in return for their help in protecting upstream ecosystems. Cities had learned to collaborate with one another to liberate rivers from industrial canals and dams, so that they and their shadows, and migrating fish, could run free again. They had also learned to collaborate with land owners to encourage organic farming and low-impact use of ecosystems in the catchments. Their citizens, affected by the ideas of ‘water democracy’, quickly became adept at conserving municipal waters, and began insisting that public water companies (the private ones having been repossessed) fix all leaks in their supply systems. [And] they also began to demand that their urban environments become much more porous, with parks and gardens everywhere, all roads made of water-permeable materials, and a water trap on every roof.” Urban October is an opportunity to join those who are seeking outcomes like this.

© Julian Caldecott 2023

World Water Day, 2023

Global heating is making complex Earth systems behave in odd ways as they start to wobble towards complete breakdown. Some involve a clear direction of change, including rising sea-levels that expose coastal lands and island aquifers to salt intrusion, and multi-year droughts that reveal the long-term desiccation of whole territories and sub-continents. Others are turbulent and inflict chaotic impacts in the form of killing heat-waves, wild-fires, disease outbreaks, floods and the increasingly savage storms that slam into unprotected coastlines. They all feed off each other and also from the degradation of coastal and catchment ecosystems that should be helping to protect human settlements, but have been damaged and are no longer able to.

These calamities are linked directly or indirectly to water: too much too quickly, or too little too late, or water with salts or poisons or germs in it. Why this matters is that all life on Earth has always depended on water, and it is an essential part of all ecosystems. The adequate supply of clean, fresh water is very much a human need as well, and one that is becoming increasingly hard to meet in many places. This has many dimensions. As one of the Sustainable Development Goals (SDG 6), the United Nations focus tends to be on ensuring access to water and keeping it clean, with an emphasis on reliable piped services and systems for keeping disease out of the pipes. But ecologists tend to focus on where the water comes from in the first place, how it is kept clean, fresh and arriving at adequate but not excessive rates of flow, and where human wastes go to, how they are processed by ecosystems, and what happens next.

From this more ecological point of view, we ask about where, how often and how hard the rain falls, how do the soils and vegetation of the catchment react to being hit by raindrops, how well does the water soak into the ground, and where does it flow to and through what? These questions are important, considering that a tropical storm can have the energy of a hydrogen bomb, that water can easily strip away unprotected topsoil and even pull rocks apart, and that it can dissolve and pick up many things that we would rather not drink. As well as climate change, which tends to make the rain fall harder when it falls at all, our chief preoccupation is often to do with the health of plant root systems that protect the soil and allow water to soak in rather than run off. So we worry about vegetation cover in the catchment: who controls, uses and protects it, and why should they manage it properly? If the people who depend on the water flowing off it don’t control it, how can they persuade the people in charge to protect it?

These practical questions go right to the heart of water security, which is among the most important issues in a water-stressed and changing world. They imply that there must be some kind of shared governance between catchment and downstream water users. This is why ‘payment for ecosystem services’ arrangements are such an important tool, in which water users pay catchment managers for protective services. These deals can be very effective, especially when local governments facilitate them and use water taxes to pay for them, but there is always a reluctance to pay for water, and often a temptation to privatise the water supply which can fatally change its ecological logic.

In many cases catchments and rivers are shared between countries, making water diplomacy a vital skill. But can be hard going if legacies of distrust or conflicting water interests are involved. The Swiss government’s ‘Blue Peace’ diplomatic initiative aims to help countries overcome such difficulties in Central Asia, the Middle East, West Africa and also in global forums. It promotes water cooperation across borders, sectors and generations, enhancing dialogue, using technical exchanges to leverage high-level discussion, and building capacity in the long-term. This is ambitious and demanding, but as global problems escalate Blue Peace may be one of the best models we have for dealing with life-threatening complexity at extreme scales.

Ecological insight can help people find practical ways to safeguard their water security. Our needs for water are met in the context of rainfall that flows through catchment, river, aquifer, farm, urban, wetland and marine ecosystems. The whole sequence must be understood and managed sustainably if water security is to be obtained anywhere. But these flows and ecosystems are often under different managers or jurisdictions, requiring co-management to be negotiated and agreed. The nexus of ecology, governance and diplomacy is thus where the keys to success in sustainable water resources management usually lie. This raises the stakes for any water and sanitation project, and those stakes are also becoming higher as climate change alters the ecological context for all efforts, decisions and negotiations. The implications of all this are worth considering on this World Water Day of 2023.

© Julian Caldecott

International Day of Forests, 2023

How we treat our forests is a measure of our relationship with nature, with each other, and with common sense. With nature because natural forests are key components in the web of life: rich with biodiversity and evolutionary and biophysical processes that sustain the living world. With each other, because natural forests are lived in by many indigenous peoples and also support vast downstream and nearby populations who rely on them for water, environmental security and essential harvests. And with common sense, because natural forests make landscapes, countries and the world as a whole both habitable and beautiful, so wrecking them is our loss.

We know all this, but the harm still being done to forests shows that we find it hard to regulate our collective treatment of them. This is usually because the bounty that forests offer is most appreciated locally and globally, but less so at intermediate levels where businesses and national governments operate. Here there are incentives with their own logic, which make it profitable in the short term to over-harvest catchment forests for their timber, to replace wetland forests with aquaculture ponds, or inland forests with plantations, mines or planned settlements.

Local and indigenous people are often too weak politically to protect themselves against these forces, yet wherever they are empowered over their forests they prefer to keep them intact. Meanwhile, the global community looks on with rising alarm, conscious that with every hectare of forest lost, another few hundred tonnes of greenhouse gases are released into the air. The days are long gone when a forest could be destroyed in Borneo or the Amazon without anyone caring on the other side of the world. Now we know that we all have to live with the consequences of global heating: floods, droughts, crop failures and high food prices, a list lengthening inexorably towards worldwide suffering, war and total system breakdown.

The story of our efforts to slow and halt forest degradation and loss is dominated by the interplay of these three levels of human society. Local people have strived for recognition and control of their lands and ecosystems. Businesses and governments have strived for short-term wealth. And global actors have strived to moderate short-term demands on forests, while not interfering in national decisions but not able to pay enough to cancel out perverse incentives. Yet this dialogue has yielded victories when different interests aligned around workable solutions.

These usually result from governments and global actors agreeing that local people should take charge of local forests for everyone’s benefit, and should be supported in doing so. Examples include the successes of Danish and Swiss support for indigenous land titling in Bolivia and community forest user groups in Nepal, and Danish support for community forest protection in the Harapan area of Sumatra and the Mbeliling area of Flores in Indonesia. There are many others, and not just in forests. The combination of local empowerment and environmental education works just as well for mangroves, fisheries, grasslands, bush-savannahs and other ecosystems wherever one cares to look, from the equator to the poles.

As well as being good for human rights, traditional lifeways, local well-being, biodiversity and landscape-scale ecosystem services, community forest initiatives are also cheap. Just for carbon, test calculations from Danish investments show that protecting high carbon-density natural ecosystems with community help has far higher climate change mitigation effectiveness per unit cost than renewable energy generation projects ever can. And the co-benefits of these initiatives are abundant, diverse, and full of promise for fair and sustainable wealth creation.

So while we struggle to head off global catastrophe later this century, we should be concentrating on the most cost-effective ways to change outcomes. And that means massively accelerating our investments in nature-based and community-based solutions in natural forests, but learning from past successes and doing it right. Adequate funding for local partnership-based protection over millions of hectares can offer certainty that billions of tonnes of carbon will not be released quickly. As a precaution during a life-or-death gamble with the living world, the need for this assurance should be shaping the regulations and market preferences that control the flow of all climate-relevant investment. With local people as genuine partners, encouraged and enabled by wise governments and advised and financed globally, conserving the world’s remaining natural forests is key to solving the triple crisis of climate, nature and poverty that faces us all. This offers us hope and purpose for the International Day of Forests, 2023.

© Julian Caldecott 2023

New paper on biosphere tipping points and climate investment

My new paper ‘Implications of Earth system tipping pathways for climate change mitigation investment’ has now been published in the peer-reviewed journal Discover Sustainability. It can be freely downloaded here. In it, I explore some implications of an anticipated biosphere-wide tipping point (BTP) in the year 2050 ± 10, including:

  • that all climate change mitigation investments should be designed, chosen and judged against this hard and dated deadline, thus urgently prioritising early delivery of net GHG savings;
  • that deadline-compliant investments should aim transparently for optimum cost-effectiveness in their biophysical outcomes, especially net GHG emission savings but also biodiversity, ecosystem service and climate change adaptation co-benefits; and
  • that investors and markets should prefer actions that yield highly cost-effective biophysical returns, especially where valuable co-benefits are expected.

I explain how to do the necessary calculations, and I provide examples from recent mitigation aid portfolios to support a change of focus from financial to biophysical returns on investment. From these cases, key ways to prevent the BTP include protecting and restoring high carbon-density natural ecosystems, and improving choice awareness and building capacity to promote decarbonisation in all economic sectors.

Three urgent research priorities remain: (1) on the consequences of an Arctic Ocean imminently free of summer sea ice, and options for remedial action including the recapture of methane at large scale and high speed; (2) on testing a new dated mitigation value metric in justifying precautionary mitigation investments in multiple sectors and contexts; and (3) on integrating diverse co-benefit values (biodiversity, ecosystem services, adaptation, etc.) into mitigation investment decision making.

Swiss climate aid evaluation published

The Independent Evaluation of SDC’s Engagement in Climate Change Adaptation and Mitigation, 2015-2020 has just been published by the Swiss Agency for Development and Cooperation (SDC). It was led by Julian Caldecott, with Warren Olding as senior expert and inputs by Tino Smaïl, Mariam Hamad, Daniel DiMarzo and Julia Schwarz of Particip GmbH, as well as by national consultants Dominica Chingarande (Zimbabwe), Lidija Fajdiga (North Macedonia and Kosovo), Pankaj Kumar (India), Marina Marill (Perú) and Mario Zenteno (Bolivia). The evaluation ranged across SDC’s whole climate portfolio, and took a system-level view on major patterns, lessons and opportunities. It was based on: (i) a Portfolio Study to describe key patterns in SDC climate change expenditure; (ii) a Design and Performance Study to assess design quality, performance (effectiveness, impact and sustainability) and transformative potential among a sample of 31 climate change projects; and (iii) a Capacity and Partnership Study to examine the strengths and weaknesses of SDC’s key delivery mechanisms.

Considering the rapid pace of global environmental change, the SDC Senior Management Team noted that: “The evaluation is an important piece of evidence that SDC has developed a portfolio of projects that benefit both people and the planet. The evaluators highlighted in particular the suitability of initiatives building on locally adapted and owned solutions for sustainable development challenges (what the evaluators refer to as ‘nature and community based solutions’ approach). This approach is not only considered to be highly effective, but also has a significant transformative potential. The SDC’s senior management is committed to build on this strength and continue the investment in projects that apply a nature- and community-based solution approach, alongside the continuation of selected regional and global endeavours. The significance of potential of co-benefits is considered as an important insight that proves that investment decisions between poverty reduction and climate change adaptation/mitigation should not be seen as a zero-sum game.”

Buying time to avoid Earth system breakdown

In this talk at the Edinburgh Climate Change Institute, Julian Caldecott warns of tipping points driven by global heating in the Arctic and other complex Earth systems. These systems have been under stress for decades, due to the heat-trapping effects of excess greenhouse gases. Using the case of the Arctic sea ice ‘death spiral’ since 1979, Julian explains how complex systems under this kind of stress tend to resist change before suddenly tipping into new forms. He then uses his knowledge of government climate aid programmes to show how being aware of mid-century deadlines can help us make better choices in mitigating climate change. Having a dated reference point would make it easier to calculate the true mitigation value of investments, thus helping to buy us time to build a safer and fairer world, one with peace with nature at its heart. But peace with nature needs ecosystem thinking, and this must quickly become normal if system change is to occur. Julian asks challenging questions about ‘business as usual’ climate aid, and offers new solutions in this most vital area of public policy.

Watch the video, or read more …

Some of the thinking in the talk is new and unorthodox. It treats Earth systems as complex and assumes that, like other complex systems, they can tip suddenly from one state to another after they have been under stress for a long time. Julian argues that just such a stress is the trapping of heat in the biosphere by greenhouse gases at a concentration in the air above 300 ppm CO2, which has been the case since about 1950. Its direct consequences include rising heat content of the world ocean and increasing global mean surface temperature (GMST). Its indirect consequences include declining polar sea ice volume, melting glaciers, marine and terrestrial heatwaves, weakening ocean currents and changing weather patterns that are often experienced as environmental chaos and usually described as climate change (CC).

The current 1.5 C goal, based on GMST, helps to focus public attention and mobilise action by governments. But it does not reflect the non-linear responses to be expected of a system as complex as the biosphere. The continuity of cause and effect over time, and the prospect of tipping points, challenge the realism of CC mitigation planning and investment assumptions. Improvements can be made by using an estimate of when Earth systems will, with current timing and heating trends, become irreversibly committed to transformational (‘tipping point’) change. This will pre-date the tipping point itself, so estimating when allows us to judge the effectiveness of CC mitigation investments in postponing it. Postponing tipping points is how we can buy ourselves time to make the changes needed for longer-term safety.

But such postponements may well become harder to do over time, as each system becomes steadily more inclined to transform itself. A relevant case is the ice-free Arctic Ocean, anticipated for September 2035 ± 5, which may already be unstoppable and could well drive a dangerous methane surge when it occurs. The mitigation value of delivering avoided net emissions would presumably decline in real terms as the commitment point is approached, either suddenly on its eve or more gradually in the preceding years. Uncertainties abound and call for precautionary thinking about the dates involved and the mitigation value of investments, including the unit value of mitigation returns on those investments. For these purposes, it is more realistic to reduce that value exponentially from now to the commitment point, rather than to assume a change from ‘valuable’ to ‘valueless’ the day before it.

Thus, a dated ‘deadline’ in mid century (2050 ± 10) might be chosen to represent the transformation commitment point of key Earth systems. This is based on the trajectory of change in sea ice minima in the Arctic Ocean, and on the rate and direction of change in other cryosphere (ice-world) and oceanic systems, and in major equatorial forest areas. Whatever the deadline chosen, precautionary investment plans would exponentially reduce the value of each expected mitigation unit as the deadline approaches. Such plans would therefore express all expected emission reductions not in tCO2e but in tCO2edmv, where ‘dmv’ stands for dated mitigation value. This would have the effect of valuing early net emission gains more highly than later ones. This is already in principle a common aim, but a standard metric would allow direct comparison of true cost-effectiveness between alternative investments in practice.

Julian tested the usefulness of this approach with data from projects funded by one EU member state in three developing countries, targeting: avoided deforestation; forest regrowth (also representing tree planting); wind farming (representing renewable energy, RE); and capacity building for economy-wide decarbonisation. Over 21 years with a constant 0.1 exponent used to depreciate mitigation value (such that 1 tCO2edmv in year 1 = 0.41 tCO2edmv in year 10 = 0.14 tCO2edmv in year 21), returns were estimated at 0.90 tCO2edmv/€ for capacity building, with least certainty; at 0.40 tCO2edmv/€ for avoided deforestation, with moderate certainty; at 0.05 tCO2edmv/€ for forest regeneration/planting, with moderate certainty; and at 0.01 tCO2edmv/€ for wind farming, with most certainty.

Among the cases with moderate to most certainty, the much higher mitigation returns from avoided deforestation than from RE and tree planting investments offer a key lesson to mitigation planners. Variation in the certainty of returns is an important factor in choosing the right mix of investments for each location, but so too are the varied co-benefits (biodiversity, adaptation, human rights, sustainable development, etc.) available from different investment strategies. And the biggest risk of all is that transformation commitment points in Earth systems cannot be postponed (or will not, due weak precaution and/or weak leadership).

This all suggests that a key starting point for justifying the expenditure of public mitigation funds lies the calculation of tCO2edmv/€. Once this is done, other factors such as expected co-benefits can be considered in detail. But the initial calculation would require an agreed deadline date (which could be moved by agreement later, if success is achieved), an agreed exponent for converting tCO2e into tCO2edmv, and attention to the comparative valuation of co-benefits for fine-tuning the justification of each investment.

Watch Julian’s talk and the Q&A afterwards here.

Surviving Climate Chaos published

Surviving Climate Chaos is being published into a new world of lethal fires, floods and record-breaking temperatures, as well as frantic international negotiations before CoP 26 in Glasgow. This is while the IPCC warns us that we are in the last decade before Arctic, oceanic and equatorial tipping points take all choices out of human hands. This emergency calls for far greater focus and impact in our climate change response, and for the strengthening of communities and ecosystems everywhere against climate chaos.

Julian Caldecott’s new book, Surviving Climate Chaos by Strengthening Communities and Ecosystems, is published by Cambridge University Press. See my author page, and book blogs: fierce chaos and tipping points; death spirals and deadlines; the ambition to survive; chaos, strength and community, and others to follow.

Abstract. “Surviving climate chaos requires communities and ecosystems strong enough to cope with the near-random local impacts of climate change. Their strength depends upon resilience, resistance and flexibility, three consequences of system integrity. Preserving and restoring the integrity of communities and ecosystems is needed everywhere, and quickly since active Arctic, equatorial and oceanic tipping points threaten total climate breakdown. This might be postponed by extreme efforts to conserve carbon-dense ecosystems, decarbonise economic systems, and recapture GHGs, but climate chaos everywhere is now inevitable. Adaptation efforts by 158 Paris Agreement Parties reported since 2015 are converging on community-based and ecosystem-based strategies. Case studies in Bolivia, Nepal and Tanzania confirm that these are correct strategies for surviving climate chaos, where success depends upon local empowerment through forums, ecosystem tenure security and environmental education. This approach, when replicated, networked and shielded by governments, offers the best way to strengthen societies against climate chaos while achieving the SDGs. Its usefulness is highlighted for national and local government officials and aid professionals with key roles in promoting adaptation, for students, researchers and teachers, and for all people who live under threat of climate chaos.”

Some highlights from the text:

  • On culture. From cases such as Hawaii (1778-1898), Iceland (1000-1262), the Holy Roman Empire (800-1806), Ancient Rome, the EU and Brexit: “Consistent differences between cultural zones in the enthusiasm of their peoples for complying with externally-agreed standards of behaviour may be legacies of deep historical experience. This is all relevant to aid programming, since it implies that taking the time and making the effort to build and educate in the context of the local culture, and creating the space for local people to find their own answers at their own pace, may well yield more robust and durable solutions than programming against imposed deadlines can possibly achieve.” (pages 79-80).
  • On leadership. “A particular risk arises where important environmental and social signals cannot be appreciated without a great deal of knowledge and attention to detail, so they are recognised only by a small minority. This applies often in large, complex or fragmented societies in which there are many distractions, and especially where slowly deteriorating environmental conditions are involved, or where there are slowly growing social threats such as inequality, corruption and polarisation. Here, if the danger is severe and solutions are needed urgently but there is little public appreciation of the need for action, an essential quality of leadership is a willingness to act decisively to safeguard the group but in advance of public opinion. An accountable leader must then explain what happened in the emergency and why, and be willing to accept responsibility for all the consequences. A good leader must at least be competent, attentive, intelligent, articulate and flexible, but all candidates for leadership are likely to claim all these attributes, so the choice will be up to the electorate. The latter might be expected to be on the look out for stupidity, cupidity, criminality, extremism, narcissism or a tendency to lie, since these often-concealed attributes can endanger everyone. With climate change, it would also make sense for voters to prefer leaders who understand ecology, at least to the extent that they can be trusted to grasp the basic ideas of where food, water and environmental security come from, and what climate change might mean for these necessities. Such knowledge can easily be tested at interview or by questioning during campaigns, but ecology is still seen as a minority interest rather than something that every citizen and journalist should know about. It is not feasible for leaders who are competent on climate change to be chosen consistently while this lack of interest in ecology persists. This is why the universal early teaching and learning of ecology is necessary to adaptation leadership, and therefore to adaptation itself.” (pages 81-82).
  • On leaving no one behind. “The most reliable, cheap and equitable way to ensure than no one is left behind is for individual hardship to be detected by other people – neighbours rather than machines, companies or functionaries of the state, and acted on by them alerting public services and monitoring the response. This offers a way to implement reliably policies of equity that require neither states nor corporations for their primary effectiveness. The key issue then becomes how to ensure that nations and corporations support and enable the operations of small groups, rather than replacing them with larger-scale systems that conflict with the ordinary sociability of our species. This choice, of whether to work with organic society or replace it with a machine state, is fast becoming urgent as the technology needed for universal surveillance is developed by corporations and bought by governments.” (pages 83-84).
  • On climate change mitigation. “Although what we should do in practice has long been obvious in general and precautionary terms, the existence of uncertainty inevitably fed controversy, and controversy has favoured the rich and powerful who often have least interest in promoting change. The whole thing has been described as a ‘wicked’ problem, being deeply complex, intractable, and resistant to solution, but an independent observer might say that we have added to this ‘wickedness’ through unclear intentions, political naïveté, and a specious faith on our own knowledge and ability to understand and predict the behaviour of extremely complex systems.” (pages 204-205). “The mitigation problem cannot be solved by any one country, and there is no all-knowing, global ‘hegemon with the power to impose a single set of rules’ (Chapter 1). Only nature could have that role, in wielding infinite power and universal rules, but this is seldom acknowledged. International cooperation is therefore essential, and this has fallen foul of multiple sources of reluctance to cooperate, rooted in historical, cultural and economic experiences, rivalries and reasons for distrust, ranging from slavery, trade and religion to imperialism, ideology and war. … The slow and painful process of the UNFCCC and its gradual, erratic progress towards approximate agreements on fixing the mitigation problem, is the compromise solution that has gradually been squeezed out of the tension in the UN system between everyone knowing that something must be done and no one being willing to pay for it.” (page 309).
  • On strengthening systems. “By assigning to local people clear, long-term rights to own, manage and benefit from ecosystems, they will become more interested in the condition of those ecosystems. By also establishing ecosystem management groups or forums where people can agree how to manage the ecosystems for which they are responsible, the ecosystems will tend to be managed in line with agreed locally-perceived priorities. Because of long-term tenure, community responsibility and forum accountability, these priorities will usually include an interest in the long-term supply, and hence sustainability, of a selection of ecosystem goods and services, for collective rather than private benefit. The forum itself will also preserve, restore or introduce practices of debate and consensus building within the empowered community. Some of these effects (e.g. biodiversity conservation, catchment services, carbon storage, conflict reduction, poverty avoidance) will also be appreciated as benefits by national society, creating an incentive among national stakeholders to support and replicate the community empowerment process. Some national benefits may be seen by outsiders, because of their different priorities, as unlikely to be adequately addressed or developed by local people, creating an incentive to improve local ecological knowledge by offering technical support, environmental education and networking with other communities where similar issues have been resolved. The net result of secure local tenure, local forums, and outside support offered but not imposed (i.e. without consent or compensation), will be healthier ecosystems and more engaged and confident local people (i.e. stronger systems) at landscape level, and improvements to governance and environmental security at the national level, as a result of which the whole country will be better able to cope with climate chaos.” (page 285).
  • On understanding the challenge. “Never before has an animal species single-handedly destabilised its own habitat at a global level, and in the process brought to a halt the evolutionary trajectories of millions of other species. We are doing this while also applying the full force of investigative and analytical technology to document and explain events and foresee outcomes, and also while in full possession of enough advanced ecological and anthropological knowledge to make sense of what we are seeing. The adaptation communications are an ever-deepening ocean of knowledge to which any student, researcher or teacher should be drawn at this, the most interesting and desperate time in human history.” (page 322).
  • On the role of small groups. “A small group can be potent if it wants to be, and partnerships are vital. There is nothing to stop everyone on Earth becoming an active part of the climate response by joining with others to make a difference. We are social animals and can achieve nothing outside of social systems, including the saving of the ecological systems on which we all depend. And one of the ways that a small local group can make a real difference is by joining forces with others to enact change and to insist on it. The more groups there are, and the more they talk with each other, the more valuable they all become, to each other, to local and national governments, and to the future.” (page 323).

© Julian Caldecott, 2021

 

Evaluating Denmark’s climate emergency response

Human impacts are known to be breaching global sustainability boundaries and activating very dangerous tipping points in Arctic, equatorial and oceanic systems, which threaten to induce a general breakdown of environmental conditions in around the middle of this century. This applies to climate change, now recognised as a global emergency by thousands of public institutions and tens of millions of citizens. But it also applies to other severe pressures on the web of life as a whole, which are causing the collapse of ecosystem values and up to a million species to become committed to extinction each year. There is a clear need for massive public intervention against this planetary disaster, and governments are slowly rising to the challenge. It is vital to prioritise immediacy and potency in reducing and reversing net greenhouse gas emissions, while also maximising co-benefits in the form of contributions to adaptation, ecosystem services, environmental and livelihood security, biodiversity conservation, human rights and the Sustainable Development Goals. All these points were driven home in the 2021 Evaluation of Danish Funding for Climate Change Mitigation in Developing Countries. This was prepared by a team led by Julian Caldecott and is now available for download here having just been published by the Ministry for Foreign Affairs of Denmark (Danida). Some highlights:

  • “Net emissions due to human activity are now more than 50 billion tonnes (Gt) of CO2e annually, so meeting this challenge requires a focus on quantity and timing. To change outcomes, mitigation effects must quickly subtract many GtCO2e per year, both cost-effectively and with maximal co-benefits and minimal co-costs.”
  • “Three key approaches to strategic mitigation are technological, ecological and capacity building, based respectively on promoting clean energy, nature-based solutions, and institutional abilities to perform modelling, planning, policy development and regulatory tasks. … The distribution of strategic effectiveness in the evaluated portfolio draws attention to particular Danish strengths: in facilitating the clean energy transition; in encouraging low-carbon development through institutional, sectoral and subnational planning and demonstrations on energy, waste, environmental management, etc.; and in conserving and restoring high carbon-density ecosystems through nature-based solutions involving local institutions, communities and participatory ecosystem management.”
  • “All are important to meeting needs within the global climate change response, since: scores of governments hope to decarbonise their energy systems; hundreds of subnational institutions and territories would benefit from low-carbon development plans and help with their implementation; and hundreds of millions of hectares of high carbon-density ecosystems exist and require protection and restoration. Considered in terms of the global climate agenda, most of these needs must be met promptly if there is to be a chance of reaching over-arching temperature, adaptation and biodiversity goals.”
  • “Important potential co-benefits of ecological mitigation actions include biodiversity, ecosystem services and environmental and water/food security, and adaptation in the face of inevitable and increasing climate chaos. The list continues for technological and ‘capacity building’ actions, through all the other SDGs, crucially including decent employment and good governance.”
  • “The basic rationale for engaging in the energy sector is to encourage and enable countries to choose lower-emission pathways than they would otherwise do in meeting their soaring energy demands. It is a correct approach, but being one that often yields medium-term (3-7 year) and long-term (8-12+ year) results, short-term, high-impact investments in mitigation and co-benefits are also required to make it viable. After all, 12+ years from 2021 will take us to 2033 or later, by which time the worst consequences of runaway climate change may no longer be avoidable. This makes it important to be aware of timing and co-benefits in considering the merits of different potential mitigation strategies.”
  • “To help choose between potential investments, [the report] proposes estimating the physical mitigation value (in tCO2e) to be expected from each, and then converting them into ‘dated mitigation values’ (tCO2edmv) according to when they will happen [Annex E explains how to do this], in order to capture the significance of a mid-century deadline, while also highlighting co-benefits for various stakeholders. It then compares three model cases, based on examples within the evaluated portfolio: avoided deforestation, which delivers large, early and cumulative but uncertain gains at moderate cost, with one set of co-benefits (biodiversity, etc.); renewable energy, which delivers moderate, cumulative and certain gains slowly at high cost, with another set of co-benefits (employment, etc.); and capacity building, which delivers very uncertain but potentially very large gains slowly but at low cost, perhaps with yet other co-benefits (green growth, etc.). All represent kinds of investment that offer distinctive advantages to a mitigation portfolio that must make sense in the short, medium and long term, including quick solutions that buy time for strategic change to occur, and attention to biodiversity and other crises that are also underway.”

 

Water 2020: new edition, new problems, new solutions

“As water crises multiply, and mass extinction and climate chaos escalate, we have the sense that nature is serving us a very clear warning and that something major has to change, or else. To respond requires that our adaptive skills are informed by ecology and applied effectively. The key issue is whether we can adjust our ways of life to make it in our new global environment. Building an informed awareness of water, and the life it bears in every drop, has to be a key starting point. Public involvement in the environmental struggle is now worldwide, transforming political agendas everywhere. Science, spirit and community are working together to release energy for change and justice at a scale seldom seen before. The channelling of this energy into ecological restoration and renewal of our relationships with nature and with each other is the great task of everyone alive today or soon to be born. It is time to make Peace with Nature.”  (Water: Life in Every Drop, pbk ISBN 9781843199632, hbk ISBN 9781843199649.

More of the same but worse, plus chaos

As large swathes of England are flooded and much of Australia burns, the 2020 edition of Water: Life in Every Drop introduces key ideas of water ecology and sustainable development. These ideas are essentially unchanged since 2008, and stories I tell and their implications for our relationship with water remain true. The need is now even stronger for ecological thinking to shape our laws and constitutions. I have weeded the book for anything that seems misleading on current reading, and in the process I updated it. Lake Baikal in Siberia is now more threatened by pollution, for example, and there are many more people living around Lake Naivasha in Kenya. These reflect general trajectories, as does the rising power of China, but for water, ecosystems and climate the position can be summarised as ‘more of the same but worse, plus chaos’.

Meanwhile, many forebodings have been fulfilled. The consequences of global heating are hard to anticipate in detail as they involve turbulent systems, but some predictions are spot on. Many thousands of wild species are sliding into extinction each year, the sea is rising, atmospheric and oceanic currents are wobbling, multi-year droughts are grinding down large parts of Australia, North America and southern Africa, heatwaves are killing people in Europe and India, and lethal wildfires are raging with unheard-of ferocity in unexpected places. Every new year is breaking records for mean global surface temperature, and savage storms are taking heat and water from warmer oceans and slamming into unprepared coastlines. And all this follows with precision the expected path of a biosphere newly-loaded with greenhouse gases released by the actions of humanity.

It was recognised in 2016 that human impacts mean that we are now living in a transition to a new geological era, the Anthropocene, which will be clearly visible in future sedimentary deposits that are rich in plastics and poor in fossil species. The Anthropocene succeeds the gentler Holocene, which followed the end of the Ice Ages 11,700 years ago. Our cities and farming systems depend on Holocene conditions, so there is now real concern that humanity will die out during this transition, along with most other life forms. We have the sense that nature is serving us a very clear warning and that something major has to change, or else. And we’re also running out of time. The melting of the Arctic Summer sea ice, which for decades has been absorbing surplus solar heat trapped on Earth by an enhanced greenhouse effect, is a particularly worrying trend that seems to be heading for zero in about 2030. After that, all bets are off.

Local water, local heroes, 2020

But we should remember that there are thousands of brilliant efforts by small groups all over the world — an aquifer or catchment restored here, a neighbourhood preparing against disaster there — multiplying everywhere but invisible to big government. These grass-roots actions must be validated and supported, networked and replicated, until they condense into a new Zeitgeist in which we all suddenly realise that of course we must pay attention to ecology, of course we must protect the web of life, and ask ourselves why else would we have minds, spirits and communities?

And meanwhile, we should also remember:

  • that there are thousands of cities and hundreds of states and provinces that are getting on with ecologically-positive action regardless of what their national governments are doing;
  • that some small countries are declaring ‘peace with nature’ and halting or reversing deforestation, extinction, and greenhouse gas emissions, with Costa Rica, Nepal, Bhutan, New Zealand, Iceland, East Timor and Portugal all springing to mind;
  • that many corporations now see their assets as dangerously exposed to ecological risks, with their managers, shareholders and regulators struggling to forge new rules, often encouraged by potent divestment campaigns; and
  • that since 2018 the Greta Thunberg and Extinction Rebellion movements have been putting enormous constructive, non-violent pressure on governments across the world, forcing a re-think of human priorities and laws in the face of impending ecological collapse.

The future, if we can but imagine it …

This is all great stuff, and because this re-thinking was starting when I wrote this book I began Chapter 10 with a visit to the year 2085: ‘The biosphere, having been saved…’ While it is easy to be discouraged if you look only at big governments and the big picture, hope is to be found hidden in the undergrowth where local actions, local heroes, and small countries are the green shoots that will one day replace the deadly old system. In the process, we’ll have to accept that the rules of ecology apply to everyone, always and everywhere, but that we have the intelligence, compassion, will and freedom needed to rebuild a world that is good for everyone — born and unborn, weak and strong, human and non-human.

Physics, astronomy, evolution, governance

There are other challenges for the imagination here. They include background themes, such as the astonishing physical chemistry of water itself (Chapter 1) and the presence of water on Earth and elsewhere in the solar system and beyond (Chapter 2). Also, the origins of the ‘tree of life’ (Chapter 2), and the influence of human adaptation to coastal environments, in which foraging in water helped to shape our minds and bodies (Chapter 3). And the EU’s Water Framework Directive (Chapter 9), which is now seen as part of a global drive towards green ‘experimentalist’ governance, where local heroes meet, teach and make friends with national and international institutions.

Ocean plastics and acidification, wildlife collapse, water shortage

Meanwhile, some topics in the book have been publicised and popularised to the point of common knowledge and general interest. They include the following.

  • Plastic in the oceans (Chapter 4) is choking, entangling and poisoning sea life, and is an inevitable consequence of making non-biodegradable materials for everyday use by everyone in an exploding population on a small planet. To solve it we will have to phase out the use of such plastics through effective regulation and/or taxation, while also cleaning up the debris.
  • Acidification of the oceans (Chapter 2) is eroding the web of aquatic life that sustains most of the biosphere and is an inevitable consequence of burning fossil fuels into carbon dioxide, which dissolves in water to make carbonic acid. The current rate looks set to make the oceans more acidic than they have been for 65 million years. To solve this, we will have to phase out the burning of fossil fuels through effective regulation and/or taxation, while also cleaning up the air by capturing the greenhouse gases that have already been released.
  • Collapse of wildlife numbers and diversity (Chapters 2, 4 and 9), by more than half since the 1970s, is an inevitable consequence of feeding and enriching humans by replacing most natural ecosystems with artificial ones and then spraying poisons over everything. To solve it we will have to deploy environmental education, community ecosystem ownership and benefit sharing, payment for ecosystem services, ecological restoration, organic farming and other effective arrangements in millions of locations, while also protecting natural ecosystems and wildlife populations through effective regulation, and systematically closing down and cleaning up all sources of agricultural, industrial and urban pollution.
  • Critical shortage of fresh water in urban areas (Chapters 6, 8 and 9) is an inevitable consequence of not paying attention to where water comes from, not managing catchments properly, and not charging users enough to pay for these things (while also, often, being an inevitable consequence of rising sea levels and drought induced by global heating). To solve it we will have to establish ecosystem protection, ecological service payments and restoration arrangements in upstream locations, while investing in public water systems that guarantee adequate water for all at affordable cost, solving the climate change problem if we can, and managing humanely the evacuation of unviable cities where we have to.

Learning to survive

Some of the changes that face us during the birth of the Anthropocene may well be manageable, but only if our adaptive skills can be informed by ecology and applied effectively. The key issue is whether we can adjust our ways of life to make it in our new global environment. Building an informed awareness of water, and the life it bears in every drop, has to be a key starting point.

© Julian Caldecott

Praise for Water: Life in Every Drop:

  • ‘A brilliant overview of an enormous subject’ – Steven Poole, The Guardian.
  • ‘Should be read far, wide and as soon as possible . . . it does an excellent job of promoting a rational, effective, trans-ideological approach to environmental decision making’ – Miguel Mendonça, Resurgence.
  • ‘Caldecott keeps a masterly hand on the reins of what is a vast topic . . . With laudable dexterity, [he] moves from the very small to the very large, from the interactions of atomic particles to the role water plays in the biosphere’ – The Ecologist.
  • ‘A prophetic read’ – Edward P. Echlin, ecological theologian and author of The Cosmic Circle.
  • ‘Includes a lucid presentation of the Aquatic Ape Theory . . . The book shows that we can avoid disaster if we come to our senses and give Gaia a helping hand’ – Elaine Morgan, evolutionary anthropologist and author of The Descent of Woman and The Scars of Evolution.
  • ‘What could be more important than water? This book looks at every aspect of water from its chemistry and mystery to its central role in the ecology of EVERY LIVING THING. And yet, it’s a riveting read, full of fascinating stories from an author who actually knows what he’s talking about. So many of these environmental books are written by journalists with no real grounding in the subject. But Julian Caldecott is an ecologist with decades of field experience which enrich this work. He’s been there, done it, seen it and best of all, has put into practice ways of solving local water crises of every hue. Give it to all your friends and relations  – they’ll love you for providing a good read and you’ll glow with the pleasure of sharing knowledge on the big issue of the coming decade.’ – ‘Smartyhands’ on Amazon.
  • ‘I’ve just finished reading Water by Julian Caldecott. There’s a long waiting list to read it after me, but it goes deeply into marine pollution, of course. One point he makes is that visitors (tourists) to the coast need to take care of the environment they’re visiting. Earlier in the book there’s a good summary of what a Biosphere is, which I sent to the members of our Grabouw Beautiful committee. Highly recommended!’ – Andy Selfe, Whale Coast Conservation (Cape Town).
  • ‘Water by Julian Caldecott is a brilliant, beautifully written book which I found very informative and initially depressing, but it finished on a positive note with a clear message of hope.’ – Henrik Chart, Land, Sea & Islands Centre, Arisaig (Scotland).

Ecological Risk and the Climate Emergency

My talk at ‘The Cooler Earth Sustainability Summit’ in Kuala Lumpur (1st October 2019).

1.          Introduction

Anxiety, frustration and risk are key themes of the climate and ecological emergency. Anxiety because nature is in free fall and signs of universal calamity are multiplying. Frustration because so little has been done to solve problems that have been anticipated for decades. Risk because of severe dangers to the biosphere, to human society and therefore to all businesses. This paper focuses on the Arctic ‘death spiral’ as an ecological risk that also illustrates the idea of tipping points, the Extinction Rebellion (XR) and Greta Thunberg’s Climate Strike as sources of transformative social change, and Malaysian opportunities for strategic leadership.

2.         Ecological emergency

At the global level, human impact are known to have been exceeded safe limits in four areas: biosphere integrity, climate change, land-system change, and biogeochemical flows. These add up to key dimensions of the ‘climate and ecological emergency’: climate chaos, ecological breakdown, mass extinction. All have the potential to induce chaotic environmental change. Since our farms and cities depend on conditions that have been stable for nearly 12,000 years, any such change would be catastrophically damaging and could well prove fatal to humanity.

Since 1992, scientists organised through the Intergovernmental Panel on Climate Change (IPCC), Millennium Ecosystem Assessment (MA), and Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) have shown us to be pushing the boundaries of biosphere integrity. Moreover, based on published evidence from many taxa, the Living Planet Index (LPI) shows a decline of over 60% in wildlife abundance since 1970 (Figure 1). In 2019, IPBES reported that close to a million species are threatened by human actions, while my own analysis implies that up to a million species are now becoming committed to extinction each year due to ‘web of life’ failures such as trophic shifts and the loss of co-evolved species.

Figure 1: The Living Planet Index: the decline of life on Earth since 1970

Natural ecosystems sustain water supplies, environmental security, pollination of crops, fisheries and soil fertility that cannot be replaced by artificial alternatives. Yet it became clear during the 2000s and 2010s that these ecosystems were deteriorating fast, exposing humanity and our farmlands and settlements to severe risks and costs. The overall message is that all the living systems that provide food, water and security for people and businesses are failing, and the failures are starting to join up. Each part of the pattern is a spreading desert, drought, wildfire, flood, storm, mudslide, epidemic, extinction, famine, or political crisis induced by them.

3.         Climate emergency

From the analysis of air bubbles trapped in ice, the carbon dioxide (CO2) concentration of the atmosphere is known to have varied over time but to have remained below 280 parts per million (ppm, or 0.028%) for 800,000 years to 1950 (Figure 2). Our machines burn fossil fuels and produce exhausts mainly in the form of CO2. Land clearances have the same effect, by felling, burning, ploughing and planting natural forest and soil ecosystems. The world’s economy has grown since the Industrial Revolution, and especially since the Second World War, and not all of this carbon could be absorbed by oceans and plants. So around 1950 it began to exceed the Earth’s capacity to absorb it, resulting in raised atmospheric CO2 concentration.

Figure 2: Atmospheric CO2 – 800,000 years to now

This has been monitored on a mountain in Hawaii since 1958, yielding the Keeling Curve (Figure 3). Superimposed on seasonal variation as the biosphere ‘breathes’, this displays an underlying trend of CO2 levels rising through the previous ceiling of 280 ppm to reach the current level of almost 420 ppm, and continuing to increase at about 3 ppm annually. CO2 is transparent to short-wavelength light but is partly opaque to long-wavelength heat, so in the air it allows sunlight to enter the biosphere but inhibits the radiation of heat into space. This mimics the warming affect of glass windows in a greenhouse, so CO2 is called a ‘greenhouse gas’ (GHG).

Figure 3: The Keeling Curve – Atmospheric CO2 since 1958.

There are other GHGs, including several industrial ones (e.g. nitrous oxide, carbon tetrachloride, the chlorofluorocarbons, and sulphur hexachloride), and methane (CH4) from bacterial decay and fermentation of organic material in oil fields, livestock, soils and peat. Most GHGs are carbon-based, so they are often just called ‘carbon emissions’. Their combined effect on global heating (i.e. their collective ‘radiative forcing’ effect) is expressed as tonnes of CO2 equivalent (tCO2e). The tCO2e level was 0.041% in 1998 and is now 0.053%, and rising. Since methane is 20-80 times more potent as a GHG than CO2, total radiative forcing is bound to rise more steeply as methane is added to the mix. The world has so far heated by about one degree in a hundred years, more in the Arctic than elsewhere, and mostly since 1980. This heating has been enough to disturb ocean currents and rainfall patterns, and to melt ice, causing ecological risks.

4.         Ecological risk

Risk judgements combine assessments of danger (what might go wrong), probability (if it’ll go wrong), and timing (when it might go wrong). Assessing risk requires knowledge, and scientists have now developed a clear sense of ecological risk in the present global situation (Tables 1-3).

Table 1: Three things that might go wrong (severe dangers)
Climate chaos: dramatic change to climatic conditions that have prevailed over thousands of years, to which our farms, settlements, businesses, etc., are adapted.
Ecosystem breakdown: the failure of millions of ecosystems, so that they can no longer provide ecosystem services at local, national or continental scale.
Mass extinction: the extinction of millions of wild species, including very ancient lineages and species that pollinate crops or maintain soil fertility.
Table 2: Three reasons why things are likely to go wrong (high probabilities)
Climate systems: assessments using knowledge of system turbulence, past behaviour, greenhouse effect and physical chemistry, observed changes and their human causes.
Ecological systems: assessments using knowledge of evolutionary history, ecological rules, responses of known ecosystems, observed changes and their human causes.
Extinction processes: assessments using knowledge of past mass extinctions, needs of wild species, patchy distribution of wild species, observed changes and their human causes.
Table 3: Three reasons why things may soon go wrong (imminent timings)
Worsening trends, such as polar and glacial ice melt, and drying and burning trends in the Amazon Basin, southern Europe and South-east Asia.
Recent changes, such as deforestation in large parts of the equatorial tropics, desertification, declining wildlife populations, etc.
Approaching ‘tipping points’, in which systems change suddenly from one stable state to another, through a brief (milliseconds to millennia) chaotic transition.

5.         The idea of tipping points

Of the dangers, likelihoods and timings in Tables 1-3, only tipping points are uncertain in the sense of being inferred rather than demonstrable. The idea occurs often in the social sciences, where it is relevant to fashion, marketing, political consensus and Zeitgeist (the ‘spirit of the times’), and in the natural sciences of physical, chemical and biological systems. In the present context it raises doubts over whether we can manage major environmental change at all, other than by using a precautionary approach. The latter means doing only things that have been proved to be harmless, thus avoiding negative but unpredictable consequences, rather than starting with actions that are easy and profitable, and then trying to manage the consequences. Ecologists prefer precautionary approaches, and they do work well for example in fisheries, where the alternative ‘maximum sustainable yield’ approach is ineffective, but they are slow and cautious, the opposite of ‘get-rich-quick’ schemes. In general, they appeal more to pessimists than to optimists who are also inclined to expect technological fixes to solve complex problems.

The other problem with the tipping point idea is that it needs ‘systems thinking’ to understand – an awareness of how complex systems behave. Complexity is familiar in the worlds of finance, business and ecology, but politicians and media people are more used to simplicity. It is hard to reduce complexity to simple political messages, making it hard to explain the need for change. Rejecting the messages of ecology and complexity can also be an excuse to protect ‘business as usual’, which may appeal to those who are doing well out of it. Experience has shown that such people will tend to resist the tipping point idea, even after all the other elements of ecological risk have been accepted. Fear of accepting truth can be so strong that even the smallest limit to scientific certainty may be used to justify denial of the problem.

6.         Ecological tipping points

Several large-scale ecological tipping points are currently at issue. Deforestation in the Amazon basin, for example, which is now at about 20% of land area, is thought to be very close to the point where there will be insufficient rainforest to maintain the region’s moist climate. Sustained and repeated drought would then permit the rapid replacement of all forest by fire-maintained grassland. A similar scenario is in prospect in Borneo and Sumatra. In all three cases, forest and land fires are underway and consistent with the tipping point prediction, with catastrophic implications for tropical biodiversity, environments and livelihoods.

The case of the Arctic further illustrates the tipping point principle, and poses a clear and present danger to all life on Earth. Figure 4 represents the ‘Arctic death spiral’, so called because it displays in spiral form the volume of sea ice in the Arctic ocean declining in the period 1979 to 2019, its depth having been measured by military submarines and its area by satellite imagery. Here it is notable that before 1980 there was little seasonal variation in sea ice volume as so much of it was in the form of deep, multi-year ice. Then, in the 1980s and 1990s multi-year ice declined and seasonal effects became more marked, and after 1997 most of the ice became single-year and began dramatically expanding in the winter and contracting in the summer.

Figure 4: The Arctic ‘death spiral’

The declining minimum ice volume in September each year (the innermost line) is the key, since from the trends visible this seems likely to approach zero in the early 2030s.  To appreciate the significance of this, it is necessary to understand several processes that are at work in the Arctic system: melting sea ice, melting peat, methane release, and fire (Box 1).

Box 1: Processes of ecological risk in the Arctic ‘death spiral’
Melting sea ice.

·       The ‘mass-melting’ effect. It takes 80 times more heat to melt ice than to warm liquid water, because of the difference between the ‘heat capacity’ of water (i.e. it takes one calorie or 4.186 joules to heat one gramme of water by one degree) and its ‘latent heat of fusion’ (i.e. it takes 80 calories or 334 joules to turn one gramme of ice at -1o to liquid water); thus, much of the extra greenhouse heat in the biosphere has so far been melting ice rather than warming sea water.

·       The ‘area-reflectivity’ effect. Ice is white and reflective, so its declining area means that more summer sunlight is absorbed by the relatively dark waters of the Arctic ocean.

Melting peat.

·       The Arctic system comprises large areas of land in Siberia, Canada, Alaska, northern Finland and Scandinavia and elsewhere within the Arctic Circle, including several trillion tonnes of carbon-rich organic peat that has existed for millennia as wet but frozen permafrost.

·       Arctic warming is two or three times faster than the global average, leading to large-scale melting of permafrosts and the decay of peat.

Methane release.

·       Decaying Arctic peat is releasing tens of billions of tonnes of methane annually, adding significantly to the 50 billion tCO2e released worldwide from all other sources.

·       At least 1.4 trillion tonnes of methane exist in frozen, water-bonded form in shallow sea-beds around the Arctic Ocean, and these molecules become unstable when warmed even slightly.

·       Methane degassing around the Arctic is already underway, and would be expected to increase dramatically with heating of the Arctic Ocean.

Fire.

·       As permafrosts melt, water is released and soils dry out, allowing land and forest fires to occur which are now underway throughout the Arctic Circle territories.

·       These fires release CO2 and smoke, soot from which darkens the remaining ice and speeds its melting under sunlight, contributing to the observed rapid melting of the Greenland ice cap.

7.         The Arctic tipping point

The melting and burning in the Arctic since 1979 is from the small amount of global heating so far, as a result of carbon emissions from industry and deforestation since about 1950 when the ‘carbon balance’ tipping point was reached for the biosphere as a whole. With no ice to absorb extra greenhouse heat in the 2030s, Arctic water will heat up very quickly, accelerating the melting and decay of permafrost peat, and the release of methane. Methane is much more potent as a GHG than CO2, so the sudden release of several trillion tonnes of it (i.e. a hundred trillion tonnes or more of tCO2e) during the 2030s and 2040s will greatly amplify the worldwide greenhouse effect, no doubt causing total climate chaos, decades of starvation, war and refugee movements, and the transformation of all societies and businesses. The forms of the Keeling Curve and Arctic ‘death spiral’ show that humanity has not yet taken any effective action to head off the Arctic tipping point. Moreover, we currently have no way to mitigate or undo such a rapid and massive methane release should it occur.

This strategic issue only came to prominence in 2016, with the publication of Peter Wadhams’ book A Farewell to Ice. We will clearly need to do several things at once about this, as a matter of the highest global importance. First, we must become much more effective at reducing net GHG emissions in general, to mitigate climate chaos and Arctic melting as far as possible. This is already a universal priority, at least in principle, with efforts focusing on decarbonising the world’s economy through renewable energy, energy efficiency, cleaner production, etc. They will need to be accelerated greatly through such measures as fixing a high, stable price for conserved carbon (to encourage decarbonisation investment), rationing emissions either directly and equitably, or through taxation and pricing, and using all available policy tools in whatever mix may be politically possible in each and every country.

Second, we must find ways to recapture GHGs from the air rapidly and at scale. Massive reforestation, forest rewilding and organic farming projects are vital (and can have additional benefits for biodiversity and ecological services), but are slow to implement and require carefully-crafted social arrangements to be effective (e.g. to resolve issues of land tenure and community motivation). But the Arctic issue shows that there is also a need to absorb a trillion tonnes or more of methane in the 2030s, so new technologies will also have to be developed in the 2020s. These would ideally, and obviously, be based on the discovery of catalysts to break down methane under open-air conditions into elemental carbon for safe storage out of contact with the air, and the roll-out of technologies to use them. The search for such catalysts could be started by a government or financial institution offering a large prize for their discovery. Why should this strategy not be driven by Malaysian financiers, scientists, and corporations?

Third, we must adapt to changes that cannot be avoided by strengthening ecological and social systems against climate chaos, recognising that stronger systems can survive some stresses that would destroy weaker ones. And fourth, the long-term goal must be to stabilise the human and biosphere system so that it becomes permanently able to prevent any repetition of the current imbalance. While the details of such a stable system cannot be predicted, its main features of social equity, participation, accountable governance, long-term precautionary thinking, sustainable use of renewable natural resources, and supportive values and belief systems can be anticipated, and its foundations can start to be built (and unhelpful foundations avoided).

These four priories can be summarised as being to minimise emissions, recapture emissions, adapt to chaos, and stabilise the human-biosphere relationship (MiRAS). Malaysia could develop the concept for a global MiRAS strategy for presentation at UNFCCC CoP 26 at Glasgow in 2020.

8.         Social risk and opportunity

The climate and ecological emergency was anticipated by far-sighted scientists in the 1960s, and became a scientific certainty in the 1970s, a popular cause in the 1980s, and the object of international agreements in 1992 with the signing of the UNFCCC and CBD. Progress since then, however, has been inhibited by various kinds of organised resistance. Angry frustration and fear of the consequences finally boiled over in August 2018, when Swedish schoolgirl Greta Thunberg (Figure 6) began her Climate Strike outside the parliament building in Stockholm, and over the following year several million other school-children became involved in similar actions.

Figure 6: Greta Thunberg as an icon of biosphere salvation (by Florence Thornton)

During 2019, Greta addressed parliaments and intergovernmental meetings across Europe and was nominated for the Nobel Peace Prize, and in September she travelled by yacht to New York to address the UN and begin a speaking tour of the Americas. Her movement broadened dramatically in October 2018 with the launch of the Extinction Rebellion (XR) in London, at which Greta spoke alongside a range of spiritual and ecological thought-leaders. The two movements have since reinforced one another, with millions of people involved in street protests and non-violent direct action on behalf of XR (Figure 7).

Figure 7: ‘The seas are rising and so are we’ – XR street protests in Bath, Bristol and London, 2019.

These protestors are scared, frustrated and angry, and they are unlikely to stand down because so many have been educated over years by David Attenborough and others, and because weather disasters and media reports around the world will continue, along with direct experience of heat-waves and storms. Hence the protests of 2018 and 2019 may be just the beginning of a growing and permanent wave of protest, focused on three primary demands:

  • for truth-telling based on the science, and official declarations of climate and ecological emergency;
  • for urgent action against GHG emissions, based on scientific realism (i.e. what is needed for survival) rather than political convenience (i.e. what is cheap and easy), with a binding, early goal of zero net carbon emissions; and
  • for governance reforms built on citizens’ assemblies, to provide leadership and participation in solving the climate and ecological emergency.

The XR and Climate Strike movements have induced some national parliaments and many local councils (including a majority of those in England) to declare ‘emergencies’ and commit themselves to zero net carbon goals. Some national governments, however (notably the USA and Brazil) have rejected these demands out of hand. While gaining experience and confidence, both XR and the Climate Strike movements have deepened their critiques of ‘business and politics as usual’, and articulated increasingly ambitious ideas for urgent change. As with any demanding mass movement, therefore, the challenge for government and business is to accept enough reform to defuse the protests without sacrificing orderly governance and elite prosperity. This situation has no precedent, however, in that the protestors are driven by an awareness of ecological reality and a wish for society to comply with the laws of nature, rather than solely by ideals of social justice.

In any case, these movements share a direction of travel with a number of more ‘establishment’ initiatives that are also pushing businesses and societies towards urgent action on the emergency. For example, from mid-October 2019 the Bank of England as a Prudential Regulation Authority will require all financial businesses to appoint people who are responsible and liable for climate risk, to allocate sufficient resources to deal with climate risk, to report transparently and accountably on the management of climate risk, and to provide evidence of compliance. As Ben Caldecott observed at the ‘Net Zero by 2050’ Conference at Rothamsted in September 2019, the policy implications of this are profound, opening the way to stronger policy signals to overcome loss aversion and encourage investment in climate resilience. As he concluded: “If ever there was an area where it would make sense to take money from the future and spend it now, this is it!”

9.         New social priorities for business

Science accurately describes ecological reality, and public alarm responds to a correct perception of that reality. Ignoring ecology is therefore no longer a viable option. Media reports are bound to encourage public anxiety and increase pressure on politicians and markets to ‘do something’ about the emergency. The costs of change are far higher now than they would have been in the 1990s, but meeting the need for change does not have to be a disaster for businesses. The efforts of XR, Climate Strike, Bank of England and other institutions and individuals are yielding new values and social priorities that are likely to respect survival, equity and honesty more than consumption, competition and choice. These will yield new basic laws and economic theories, new responses to business misbehaviour, and new expectations of how a creditworthy business ought to act (Tables 4-6). Businesses that adapt to this new social environment, and that also survive climate chaos, ecological breakdown and mass extinction, should become or remain profitable – and those that find new and appropriate niches in the emergency and the (hoped-for) post-emergency economy may do well.

Table 4: Emerging expectations of basic law and economic theory
Prohibiting ecocide, to make ecocide – the deliberate or negligent destruction of natural ecosystems and species – a criminal act under international law.
Peace with Nature, to amend or write national constitutions to place the laws of ecology above human laws (i.e. that ‘parliament is sovereign, but nature is supreme’).
Wellbeing economy, to re-write the assumptions of economics and policy (e.g. in Scotland, Iceland and New Zealand) in line with new criteria for long-term public well-being and ecological health.
Table 5: Emerging responses to business misbehaviour
If a business is not seen to comply with the new social priorities then it may be punished by consumer boycotts or direct action.
If a business simply cannot comply, for example if its business model is based on air travel by jet, it may be abandoned by its customers.
If a business does not comply with legal requirements on reporting its climate actions and vulnerabilities, then it may be fined or suspended from trading.
If politicians (or markets) adopt a precautionary approach to ecological tipping points, then some asset values can collapse suddenly and completely.
Table 6: Emerging expectations of creditworthy businesses
Homework. Businesses should actively seek to discover their unique strengths and weaknesses, vulnerabilities and opportunities in the climate emergency.
Knowledge. Businesses should hire the best available ecological minds to engage with ecological reality, and to demonstrate a willingness to change.
Partnerships. Businesses should reach out and build genuine partnerships with public, academic and other institutions, and with shareholders and regulators.
Leadership. Businesses should encourage, enable and re-educate governments to help them adapt through fair and sensible regulation to the new rules of the climate emergency.

10.        Nature cannot be fooled

The Keeling Curve and Arctic ‘death spiral’ are top-level indicators of the state of the biosphere. They trace the net effect of trillions of actions and transactions that month by month affect the physical chemistry of the living world. They report an imbalance in human activity relative to all other organisms and processes on Earth, and in their present forms they imply a catastrophic near future for humanity and all other life on Earth. Over coming decades, the Keeling Curve must be flattened out and start to fall, and the lines representing Arctic summer sea ice volume must cease their orbit toward zero.

It is tempting to say that nothing else matters, but this is not so. Our aim should be to achieve these things while also laying the foundations of a benign human-biosphere relationship, and ideally a benign human-human relationship was well. We should do nothing in the short term that prevents our learning the lessons that we will need in the long term. On the other hand, we must save ourselves so that we can re-grow, and as much as possible of nature so that she can re-grow (making recovery of the LPI necessary as well).

And these acts of salvation must be real; there is no longer any role for greenwashing or pretend marketing. A mixed strategy is called for, based around the MiRAS priorities: minimising GHG emissions, recapturing past emissions, adapting to change by strengthening social and ecological systems, and refashioning human society and our relationship with nature. It is of course possible to list parts of such a mixed strategy, where businesses, investors, regulators and broader society can collaborate to take specific measures to reduce GHG emissions (Table 7) and adapt to chaos (Table 8). Of these, the adaptation opportunities are least understood, since we cannot always know what will work best in chaotic conditions, but we can take a precautionary approach and use ecological common sense to build resilience. A current book project to clarify these matters is outlined in Box 2.

Table 7: Three kinds of opportunity in minimising net GHG emissions
Finding the catalysts needed to break down GHGs into elemental carbon in open-air conditions, and in mass-producing the negative-emission technology to use them effectively (with methane as top priority because of the Arctic methane eruption).
Contributing to decarbonising the economy, with businesses finding out (often with the advice of lenders, government and UN knowledge management systems) where they can make real emission savings from renewable energy, energy efficiency, insulation, recycling, etc.
Protecting forests and planting trees – that is, large areas of native species to sustain local biodiversity, and to protect them against pests and fire (large-scale reforestation and rewilding being an effective way to trap carbon, save biodiversity, and restore ecological services), usually best done with the full participation of local communities and in their own interests.
Table 8: Three kinds of opportunity in adapting to climate chaos
In the forestry and land use sectors, managing and restoring water catchments and ecosystem defences against floods, storms, fires and the spread of deserts, usually best done through partnerships with the societies affected and involved.
In the public health, health care and biomedical sectors, developing preventative and curative systems and medicines with which to anticipate and respond to the medical effects of climate chaos (including water-borne diseases, new vectors and disease profiles, and heat waves).
In the agriculture sector, since ecosystems full of wild species tend to resist diverse stresses better than simple systems, and they also store more soil carbon, organic farming as a way to meet aims for food (sustainable diversification), health (pesticides and disease vectors), biodiversity (preserving the web of life), adaptation (soil restoration and catchment protection) and mitigation (soil carbon capture).
Box 2: Adapting to Climate Chaos by Strengthening Ecological and Social Systems
This book by Julian Caldecott, recently commissioned by Cambridge University Press, aims to discuss the problems of anticipating chaotic change. It will present evidence from evaluated aid programmes that the fragility of these complex systems can be reduced by promoting public understanding of ecology, the sharing of knowledge, and locally-accountable leadership. These topics have extreme urgency since climate chaos, mass extinction and ecosystem breakdown are recognised features of our immediate future, and tipping points in major systems such as the Arctic and Amazon are imminent. While accepting the need to bring GHG emissions under strict control, adaptation is also a priority, especially for those concerned with sustainable development. Simple engineering solutions are often not enough, and the aim is to describe effective new ways to make it easier for citizens, leaders and aid professionals to make replicable strategic choices that reliably strengthen ecosystems and societies.

Lists such as those in Tables 7 and 8 are indicative. It is better for people to study ecology and understand how everything fits together and influences each other, so that wise decisions can be made consistently and well. The good news is that ecology is not hard to understand, and public opinion and regulations are changing to make it easy – and necessary – to pay more attention to it. When people elect ecologically-aware lawmakers, then businesses can hire ecologists just as fast as they hire lawyers and accountants. Also, while nature is remorseless and all-powerful when provoked, she has great power to help put things right again if people allow it. Human ingenuity and enterprise may be able to do the rest.

© Julian Caldecott, Schumacher Institute for Sustainable Systems