Nicola Sturgeon is an MSP (Member of the Scottish Parliament) and former First Minister of Scotland. Ben Wilson is International Policy Lead for Stop Climate Chaos Scotland.
The world is at a crossroads. The impacts of climate change are destabilising societies, causing conflict, and deepening economic hardship. Yet, instead of rising to the challenge, too many political leaders are retreating from climate commitments, undermining a global consensus that has anchored peace and security since the Second World War.
This, then, is a moment to remind ourselves that climate action is not just about protecting the environment – it is also essential for global security. Failure to act now will drive population displacement, fuel political unrest, and create conflict.
Climate change is already driving conflicts around the world. The war in Tigray, Ethiopia, was fuelled in part by climate-induced droughts. Similarly, in Sudan, shifting migration patterns due to desertification and water scarcity have heightened ethnic and regional tensions, leading to violence and mass displacement.
These are not isolated incidents. If we don’t act now, climate disasters will fuel human insecurity on an unprecedented scale.
The economic consequences of climate inaction also pose a serious threat to peace. When communities lose their livelihoods, social unrest can follow. Economic hardship opens the door to far-right forces seeking to stoke xenophobia and racism. Governments that neglect climate action now increase the likelihood of instability in future.
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Net zero will bring economic benefits
The trend of global leaders backtracking on climate action is being driven by an increasingly sensationalist (and ill-informed) public narrative that net zero is bad for the economy. This is a falsehood now (a recent CBI report showed that the net-zero industry is an important driver of growth) and certainly wrong in the long-term. Ignoring climate action now will saddle us with significant financial and human costs in the years ahead.
As the Stern Review made clear nearly two decades ago, the economic benefits of taking decisive action on climate change far outweigh the costs of inaction. But it’s not just about economics – it’s also about justice.
The latest IPCC reports confirm that climate impacts are already driving poverty, hunger and displacement in some of the world’s most vulnerable communities. These inequalities will deepen – with consequences for all of us – unless emissions are reduced and adaptation efforts accelerated.
UK aid budget cuts threaten climate finance pledge to vulnerable nations, experts warn
The decision of the UK and many other governments to cut aid budgets to fund defence is particularly jarring. The climate finance commitments of the Paris Agreement will almost certainly be hit, further undermining the delicate balance between the Global North and the Global South. COP29 in Baku only just avoided collapse. Without a renewed commitment to climate justice this year, COP30 and the underlying premise of global cooperation on climate change will be at risk.
Loss and damage funding not a luxury
There is no doubt that climate justice demands a sharper focus on mitigating emissions and adaptation. But it needs more than that.
At COP26 in Glasgow, Scotland became the first country to commit finance to the issue of loss and damage. Loss and damage refers to payments from the Global North to the Global South to deal with the irreversible climate impacts they are already experiencing. It is an act of reparation rather than charity.
The Scottish Government’s initial commitment of £2m was modest but heralded as “breaking the taboo” on this most contentious of issues. Other countries followed and by COP28, the United Nations Fund for Responding to Loss and Damage had been established with more than US$700 million pledged.
Loss and damage fund to hand out $250 million in initial phase
In the face of pushback against action on mitigation and adaptation, and a re-emergence of climate denial in UK and global politics, many people, even climate activists, might wonder if loss and damage is now an unaffordable luxury, and question if this is the time to spend political capital, let alone hard cash, on reparations.
In our view, stepping back from loss and damage would be a serious mistake. Failure to ameliorate the irreversible impacts already being suffered will drive more conflict across the world. Moreover, if the Global North breaks its promises again, the understandable scepticism of the Global South about the efficacy of the COP process will only grow. Acting in good faith on all aspects of climate injustice is fundamental to any vision of a peaceful world.
At its core, climate action is a question of justice. The poorest countries have contributed least to the crisis and yet they bear the brunt of its impacts. This is not just a moral failure – it is also a geopolitical risk. We cannot expect the Global South to cooperate in a system that repeatedly ignores their needs and priorities. The principle of fairness is not just an ethical consideration; it is a practical necessity for sustaining peace.
Multilateralism on the line at COP30
This is why the principle of multilateralism – the foundation of the post-war global order – must be defended.
Small nations matter. The principle that Fiji and Kiribati have the same vote as the United States or Russia in climate negotiations is not a flaw – it is a cornerstone of global peace. When powerful countries sideline ‘one country, one vote’ multilateralism – as many in today’s geopolitical wrangling are doing – they signal that might makes right, an approach that make conflict more, not less, likely.
In short, the retreat from strong, multilateral climate action is not just an environmental failure – it is a security risk. Leaders who defund climate finance in favour of military spending are not making the world safer; they are creating the conditions for future conflicts.
COP30 chief calls for global unity on climate action as cooperation falters
At COP30 in Brazil, the future of global cooperation on climate change – indeed of the UN process itself – is on the line. Leaders of goodwill across the world must recognise that climate justice, whether on mitigation, adaptation, or loss and damage, is an essential ingredient for a peaceful world. Pandering to strong-man egos will only deepen injustice and increase global instability.
For the sake of future generations, this one’s leaders must stand up for justice. They must be willing to see beyond today’s headlines and secure a future built on the common good. 2025 might feel like the start of a road toward global conflict and climate breakdown, but it doesn’t need to be.
With political will, COP30 can be a bounce-back moment when the norms and values necessary for peace are reinforced. The imperative of bequeathing a healthy and peaceful planet to those who come after us demands that it be so.
The post Climate justice is vital for global security appeared first on Climate Home News.
American farmers are drowning in health insurance costs, while their German counterparts never worry about medical bills. The difference may help determine which country’s small farms are better prepared for a changing climate.
Samantha Kemnah looked out the foggy window of her home in New Berlin, New York, at the 150-acre dairy farm she and her husband, Chris, bought last year. This winter, an unprecedented cold front brought snowstorms and ice to the region.
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Climate Change
A Little-Used Maneuver Could Mean More Drilling and Mining in Southern Utah’s Redrock Country
Two Utah Congress members have introduced a resolution that could end protections for Grand Staircase-Escalante National Monument. Conservation groups worry similar maneuvers on other federal lands will follow.
Lawmakers from Utah have commandeered an obscure law to unravel protections for the Grand Staircase-Escalante National Monument, potentially delivering on a Trump administration goal of undoing protections for public conservation lands across the country.
A Little-Used Maneuver Could Mean More Drilling and Mining in Southern Utah’s Redrock Country
Drought and heatwaves occurring together – known as “compound” events – have “surged” across the world since the early 2000s, a new study shows.
Compound drought and heat events (CDHEs) can have devastating effects, creating the ideal conditions for intense wildfires, such as Australia’s “Black Summer” of 2019-20 where bushfires burned 24m hectares and killed 33 people.
The research, published in Science Advances, finds that the increase in CDHEs is predominantly being driven by events that start with a heatwave.
The global area affected by such “heatwave-led” compound events has more than doubled between 1980-2001 and 2002-23, the study says.
The rapid increase in these events over the last 23 years cannot be explained solely by global warming, the authors note.
Since the late 1990s, feedbacks between the land and the atmosphere have become stronger, making heatwaves more likely to trigger drought conditions, they explain.
One of the study authors tells Carbon Brief that societies must pay greater attention to compound events, which can “cause severe impacts on ecosystems, agriculture and society”.
Compound events
CDHEs are extreme weather events where drought and heatwave conditions occur simultaneously – or shortly after each other – in the same region.
These events are often triggered by large-scale weather patterns, such as “blocking” highs, which can produce “prolonged” hot and dry conditions, according to the study.
Prof Sang-Wook Yeh is one of the study authors and a professor at the Ewha Womans University in South Korea. He tells Carbon Brief:
“When heatwaves and droughts occur together, the two hazards reinforce each other through land-atmosphere interactions. This amplifies surface heating and soil moisture deficits, making compound events more intense and damaging than single hazards.”
CDHEs can begin with either a heatwave or a drought.
The sequence of these extremes is important, the study says, as they have different drivers and impacts.
For example, in a CDHE where the heatwave was the precursor, increased direct sunshine causes more moisture loss from soils and plants, leading to a drought.
Conversely, in an event where the drought was the precursor, the lack of soil moisture means that less of the sun’s energy goes into evaporation and more goes into warming the Earth’s surface. This produces favourable conditions for heatwaves.
The study shows that the majority of CDHEs globally start out as a drought.
In recent years, there has been increasing focus on these events due to the devastating impact they have on agriculture, ecosystems and public health.
In Russia in the summer of 2010, a compound drought-heatwave event – and the associated wildfires – caused the death of nearly 55,000 people, the study notes.
The record-breaking Pacific north-west “heat dome” in 2021 triggered extreme drought conditions that caused “significant declines” in wheat yields, as well as in barley, canola and fruit production in British Columbia and Alberta, Canada, says the study.
Increasing events
To assess how CDHEs are changing, the researchers use daily reanalysis data to identify droughts and heatwaves events. (Reanalysis data combines past observations with climate models to create a historical climate record.) Then, using an algorithm, they analyse how these events overlap in both time and space.
The study covers the period from 1980 to 2023 and the world’s land surface, excluding polar regions where CDHEs are rare.
The research finds that the area of land affected by CDHEs has “increased substantially” since the early 2000s.
Heatwave-led events have been the main contributor to this increase, the study says, with their spatial extent rising 110% between 1980-2001 and 2002-23, compared to a 59% increase for drought-led events.
The map below shows the global distribution of CDHEs over 1980-2023. The charts show the percentage of the land surface affected by a heatwave-led CDHE (red) or a drought-led CDHE (yellow) in a given year (left) and relative increase in each CDHE type (right).
The study finds that CDHEs have occurred most frequently in northern South America, the southern US, eastern Europe, central Africa and south Asia.
Threshold passed
The authors explain that the increase in heatwave-led CDHEs is related to rising global temperatures, but that this does not tell the whole story.
In the earlier 22-year period of 1980-2001, the study finds that the spatial extent of heatwave-led CDHEs rises by 1.6% per 1C of global temperature rise. For the more-recent period of 2022-23, this increases “nearly eightfold” to 13.1%.
The change suggests that the rapid increase in the heatwave-led CDHEs occurred after the global average temperature “surpasse[d] a certain temperature threshold”, the paper says.
This threshold is an absolute global average temperature of 14.3C, the authors estimate (based on an 11-year average), which the world passed around the year 2000.
Investigating the recent surge in heatwave-leading CDHEs further, the researchers find a “regime shift” in land-atmosphere dynamics “toward a persistently intensified state after the late 1990s”.
In other words, the way that drier soils drive higher surface temperatures, and vice versa, is becoming stronger, resulting in more heatwave-led compound events.
Daily data
The research has some advantages over other previous studies, Yeh says. For instance, the new work uses daily estimations of CDHEs, compared to monthly data used in past research. This is “important for capturing the detailed occurrence” of these events, says Yeh.
He adds that another advantage of their study is that it distinguishes the sequence of droughts and heatwaves, which allows them to “better understand the differences” in the characteristics of CDHEs.
Dr Meryem Tanarhte is a climate scientist at the University Hassan II in Morocco, and Dr Ruth Cerezo Mota is a climatologist and a researcher at the National Autonomous University of Mexico. Both scientists, who were not involved in the study, agree that the daily estimations give a clearer picture of how CDHEs are changing.
Cerezo-Mota adds that another major contribution of the study is its global focus. She tells Carbon Brief that in some regions, such as Mexico and Africa, there is a lack of studies on CDHEs:
“Not because the events do not occur, but perhaps because [these regions] do not have all the data or the expertise to do so.”
However, she notes that the reanalysis data used by the study does have limitations with how it represents rainfall in some parts of the world.
Compound impacts
The study notes that if CDHEs continue to intensify – particularly events where heatwaves are the precursors – they could drive declining crop productivity, increased wildfire frequency and severe public health crises.
These impacts could be “much more rapid and severe as global warming continues”, Yeh tells Carbon Brief.
Tanarhte notes that these events can be forecasted up to 10 days ahead in many regions. Furthermore, she says, the strongest impacts can be prevented “through preparedness and adaptation”, including through “water management for agriculture, heatwave mitigation measures and wildfire mitigation”.
The study recommends reassessing current risk management strategies for these compound events. It also suggests incorporating the sequences of drought and heatwaves into compound event analysis frameworks “to enhance climate risk management”.
Cerezo-Mota says that it is clear that the world needs to be prepared for the increased occurrence of these events. She tells Carbon Brief:
“These [risk assessments and strategies] need to be carried out at the local level to understand the complexities of each region.”
The post Heatwaves driving recent ‘surge’ in compound drought and heat extremes appeared first on Carbon Brief.
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