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The UK has fallen nearly 40% behind on its pledge to rapidly scale up climate finance for developing countries, according to Carbon Brief analysis.

A freedom-of-information (FOI) request reveals that, rather than rising steadily to meet a target of £11.6bn over five years, UK climate spending overseas has fallen for two years in a row.

It is now around £2bn off track – assuming there should have been even progress towards the goal.

Boris Johnson’s government, with current prime minister Rishi Sunak as chancellor, committed in 2019 to ramping up its international climate finance (ICF) in order to reach a target of £11.6bn between the financial years 2021/22 and 2025/26.

The figures obtained by Carbon Brief show that UK spending has dipped from £1.56bn in 2020/21 to £1.47bn in 2021/22 – and around £1.36bn in 2022/23.

The numbers for 2022/23 are described in the FOI release as “provisional”, but the total sum is similar to one recently reported by the Guardian, based on leaked civil service documents.

Carbon Brief understands that the government’s figures for that period could be revised upwards when the final numbers are released, but are still likely to fall short of the £11.6bn trajectory.

The government would now have to roughly double its recent annual spending over the next three years, on average, if it is to stand any chance of delivering its pledge.

The UK is facing mounting pressure to provide more money to help vulnerable nations deal with climate change. Yet the government has slashed its overall budget for foreign aid, citing economic pressures at home. It has also redirected some of its foreign-aid spending towards the domestic processing of asylum-seekers.

Climate-finance experts tell Carbon Brief that the current shortfall is “troubling”, adding that it will now be “highly challenging” for the UK to achieve its goals without strong political will.

£11.6bn pledge

Former prime minister Boris Johnson announced in 2019 that the UK would spend £11.6bn on ICF between the financial years 2021/22 and 2025/26.

This has since been reinforced by his successor, Rishi Sunak, who told leaders at the COP27 climate summit in 2022 that he “profoundly believe[s] it is the right thing to do”.

The target doubled the government’s previous five-year pledge to spend “at least £5.8bn” on tackling climate change between 2016/17 and 2020/21 – a goal that has been achieved.

Both targets make up the UK’s contribution to a wider promise by all developed countries, as part of the Paris Agreement, to ramp up climate finance for developing countries to $100bn a year by 2020. Three years on, these nations are still yet to reach this target.

Without significantly increased climate finance, developing nations say they will not be able to transition to low-carbon economies and protect their people from climate hazards.

The UK’s climate finance spending has been under intense scrutiny in recent years.

First, the government slashed its overall development aid spending from the UN-backed benchmark of 0.7% to 0.5% of gross national income (GNI), citing the economic shock of Covid-19. Climate projects are among the many under threat from cuts.

Since then, the expansion of military aid to Ukraine and diversion of foreign aid to support refugees arriving in the UK have sucked up more of the shrinking resource pool.

In July, the Guardian reported on a leaked civil service briefing for ministers, explaining why the combination of these factors would justify dropping the £11.6bn goal altogether. The government has denied that it intends to drop the pledge.

Responding to a written question on 17 July, development minister Andrew Mitchell confirmed that the UK had spent “over £1.4bn” on ICF in 2021/22. However, he did not share data for 2022/23 or plans for spending out to 2025/26.

FOI requests

Carbon Brief submitted FOI requests to the three government departments responsible for running climate-related development projects: the Foreign, Commonwealth and Development Office (FCDO); the Department for Environment Food and Rural Affairs (Defra); and the now-defunct Department for Business, Energy and Industrial Strategy (BEIS).

They provided data on ICF spending between 2011/12 and 2022/23, although Defra withheld its 2022/23 data, stating it was “yet to finalise” it. Both the other departments provided this data, with the caveat that the figures were “provisional”.

(For in-depth analysis of more than a decade of climate finance spending, see Carbon Brief’s full analysis.)

The annual totals, broken down by financial year, can be seen in the chart below. (Spending by Defra, which makes up roughly 3% of total climate finance, has been estimated for 2022/23 based on the average spend over the previous five years.)

Annual ICF spending has more than tripled since the UK started officially providing it in 2011. However, as the data obtained by Carbon Brief shows, for the past two years it has been in decline, pushing the £11.6bn goal further out of reach.

Annual ICF, £bn, by financial year for the period 2011/12 to 2022/23.
Annual ICF, £bn, by financial year for the period 2011/12 to 2022/23, indicated by the blue line. Red dotted lines indicate the annual average spend that would be required to meet the government’s five-year £11.6bn goal by 2025/26, both from a starting point of 2020/21 (yellow) and a starting point of 2022/23 (red). Data for 2022/23 is “provisional”. Data from Defra for 2022/23 is based on the average amount provided in the previous five years, as this department declined Carbon Brief’s FOI request for this year. Source: UK government data obtained by FOI request.

If the £11.6bn target had been split evenly over the five years covered by the pledge, the UK would have spent £2.32bn annually on climate finance between 2021/22 and 2025/26.

So far, however, the government has fallen far short of this, spending £1.46bn in 2021/22 and just £1.36bn in 2022/23. This amounts to a £1.81bn – or 39% – shortfall over the two-year period, relative to even progress towards the £11.6bn goal.

If the government is still to meet its £11.6bn target, climate finance would have to more than double to £2.92bn in 2023/24 and stay that high until 2025/26 – an unprecedented increase.

The 2022/23 figure obtained by Carbon Brief aligns with the Guardian’s reporting on a leaked civil service document, which “confirmed” that ICF spend for 2022/23 was £1.35bn – and expected to rise to around £1.59bn in 2023/24.

Despite this confirmation, Carbon Brief understands that, when the final spending total for 2022/23 is released, it could be higher.

Jonathan Beynon, a senior policy associate at the Center for Global Development who, until 2022, worked for FCDO on climate finance and other issues, tells Carbon Brief this could be achieved in part by reclassifying more funds within existing foreign aid projects as climate-related. Again, this was mentioned in the leaked document.

A government spokesperson tells Carbon Brief that “the government remains committed to spending £11.6bn on international climate finance and we are delivering on that pledge”, adding that “we will publish the latest annual figures in due course”.

‘Shockingly low’

All of this means that the £11.6bn target is slipping out of reach, according to former Conservative FCDO minister Zac Goldsmith, who resigned from government in June, citing its “apathy” towards climate change and the environment. He tells Carbon Brief:

“Technically, [the target] does remain government policy, but the shockingly low levels of expenditure make it a mathematical impossibility that the promise can be kept. Among beleaguered and hard-working civil servants this is an open secret and well understood. Indeed, the only way the promise can be kept is if the next government in its first year spends well over 80% of all its bilateral spending on climate, which clearly cannot happen with all the other important commitments we have.”

Clare Shakya, a climate finance expert at the International Institute for Environment and Development (IIED), tells Carbon Brief it would be “highly challenging” for the government to “double the level of spending in a year and still ensure the projects and programmes it was supporting were of good quality”.

Faten Aggad, a climate diplomacy expert and adjunct professor at the University of Cape Town, agrees that it is “doubtful” the UK government would prioritise climate spending with its current economic outlook and a general election looming. She tells Carbon Brief:

“Engagements of the current government also show that the commitment to the climate agenda is not as strong as one might have hoped. So I would be surprised to see the spending doubled.”

However, Beynon tells Carbon Brief a “backloaded trajectory” – where spending started off relatively low and then increased more towards the end – was always envisaged for the five-year £11.6bn target period. (This is confirmed in the Guardian’s reporting, which says the government’s internal target for ICF spending in 2022/23 had been £1.77bn.)

He notes that the same pattern can be seen in the previous five-year target period, which still resulted in the goal being successfully met. A slow start can reflect the time taken for new climate projects to be set up and developed.

That said, Beynon adds that he would have expected an “uplift” by 2022/23, so the trend continuing downwards would be “troubling”. As for whether the target can still be achieved, he says:

“The short answer is: it’s possible, but it’s challenging…Primarily because of the wider context – the cuts in ODA [official development assistance] and the decision to choose to spend a good chunk of that ODA on hosting refugees.”

While developed countries are technically allowed to spend some of their aid budget on housing refugees, the UK spent an unusually high amount – around 30% – on this in 2022, to accommodate people arriving from Ukraine and Afghanistan. Only three nations, none of them major aid providers, spent higher proportions of their development aid in this way.

Experts tell Carbon Brief that, depending on the government in charge and how much they prioritise international development, the target could still be achieved.

“The goal is certainly within reach if the political will is there to achieve it,” Saleemul Huq, director of the International Centre for Climate Change and Development (ICCCAD) in Bangladesh, tells Carbon Brief.

The Treasury has confirmed that foreign-aid spending will likely not be restored to 0.7% of GNI until at least beyond 2027/28, if the Conservative government remains in power – two years after the £11.6bn deadline. The opposition Labour party has said it will examine a “pathway back to 0.7%” over the course of the next parliament, if it wins the upcoming general election.

Beynon says that, with such widely publicised targets in place, climate-related development spending has, in his view, been “relatively protected”, compared to other areas of development aid that have felt the impact of cuts.

At the recent G20 summit in India, Sunak announced a pledge of £1.62bn in climate finance to the Green Climate Fund (GCF), described by the government as a “major contribution” towards its £11.6bn commitment.

Yet given the wider state of UK climate finance, Goldsmith says the prime minister, or chancellor Jeremy Hunt, would need to “personally intervene” to bring the UK back on track for the goal. Goldsmith criticises Sunak for “pretending we are on course when [he knows] we simply are not”.

Experts warn that a failure to scale up climate finance would seriously threaten the UK’s international reputation. Shakya says:

“If the UK does not meet its own promised contributions, this will not only impact the UK’s standing, but also whether any rich countries can be trusted.”

In less than two months, Sunak will travel to COP28 in Dubai where there will once again be significant pressure placed on developed countries to meet their existing climate-finance pledges – as well as raise the bar higher in the coming years.

The post Analysis: How the UK has fallen 40% behind on its £11.6bn climate-finance pledge appeared first on Carbon Brief.

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‘Ride the wave of momentum’: Australia announces once-in-a-decade Marine Parks Network review

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In response to the federal government announcing its once-in-a-decade review of Australia’s Marine Parks Network, the following lines can be attributed to Elle Lawless, Senior Campaigner at Greenpeace Australia Pacific:

“Greenpeace Australia Pacific welcomes today’s announcement that the Albanese Government will review Australia’s Commonwealth Marine Parks Network. This is a rare, once-in-a-decade opportunity to strengthen our marine parks and ban industrial fishing in Australia’s marine protected areas.

“Australians would be appalled to know that more than half of Australia’s Marine Parks Network currently allows for extractive industries, like longlining, bottom trawling and oil and gas mining. These so-called ‘protected’ areas were designed to safeguard our beloved ocean wildlife and underwater ecosystems – that is what Australians expect. Damaging industrial industries should not be given a free pass to trawl, fish, drill or extract from our marine parks.”

“With the first Ocean COP just around the corner, and off the back of Australia’s move to ratify the Global Ocean Treaty earlier this year, the Australian government has a unique opportunity to ride the wave of this momentum and solidify itself as a true global ocean leader.

“Greenpeace Australia Pacific is calling for industrial activities to be banned from our protected waters and for at least 30% of Australia’s ocean to be protected as ocean sanctuaries. This review presents a rare opportunity to create more ocean sanctuaries, true blue havens where ocean life can recover, thrive and repopulate the surrounding waters.”

—ENDS—

‘Ride the wave of momentum’: Australia announces once-in-a-decade Marine Parks Network review

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Factcheck: No, Europe is not having its ‘quietest’ year for wildfires

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In recent days, prominent climate sceptics and rightwing commentators have shared charts on social media incorrectly implying that Europe is having its “quietest” year for wildfires in 2026.

These include Dr Matthew Wielicki, a former University of Alabama geochemist and self-described “professor in exile”, who was recently appointed by the Trump administration to lead the US Global Change Research Program.

However, these charts paint a misleading picture as they are skewed by encompassing the entirety of Russia in the data – including the vast plains of Siberia.

These charts also use data that include fires that are deliberately lit to manage cropland, which is a declining practice across much of Europe.

In this factcheck, Carbon Brief shows that the area burned by wildfires across the European Union in 2026 is second only to 2022 for this time of year.

The latest data from the European Forest Fire Information System (EFFIS) also shows that France has set a new modern record for area burned and Spain’s wildfire season is among the worst on record.

The fires have displaced more than a third of a million people across south-western Europe, while an impending heatwave has also raised fears of the fires worsening in the coming days.

‘Quietest year’

On 27 July, as wildfires raged across multiple European countries, former Conservative peer and climate-sceptic commentator Matt Ridley posted on Twitter that “2026 is the quietest year for wildfires in Europe by some distance”.

Misleading social media post by Mitt Ridley that says" er...2026 is the quietest year for wild fires un Europe by some distance."

Ridley, who sits on the academic advisory council of the Global Warming Policy Foundation (GWPF), a UK-based climate-sceptic lobby group that refuses to reveal the sources of its funding, was responding to an article by Daily Telegraph columnist Tim Stanley.

Stanley’s column, headlined: “Climate change is real – and the right needs to get serious about it”, warned:

“This is no longer a matter of speculation: the wildfires of Europe, pitiless and persistent, are the way we live now.”

Ridley included a chart from Our World In Data, showing the cumulative area burned by wildfires by week for Europe. The chart puts 2026 as having the smallest area for this time of year in a dataset going back to 2012.

Ridley’s post was widely shared by prominent rightwing figures – including Richard Tice, deputy leader of the hard-right, climate-sceptic Reform UK party, former Conservative cabinet minister Jacob Rees-Mogg and multiple commentators.

Separately, Wielicki also shared a chart on Twitter to imply that wildfires in Europe are declining. Wielicki has previously claimed that the “science is not settled on climate change”.

The charts posted by Ridley and Wielicki both use data from the Global Wildfire Information System (GWIS). The GWIS category for “Europe” encompasses all the countries on the continent and includes the whole of Russia.

As a result, Russia accounts for about 74% of the area included in the GWIS definition of “Europe”.

Wildfires in Russia typically account for 80-90% of the burned area in the GWIS Europe dataset. In 2026, fires in Russia are substantially below average. Therefore, including Russia in this comparison creates the false impression that wildfire activity across Europe is unusually low.

Dr Calum Cunningham, a research fellow at the University of Tasmania’s Fire Centre, says that such claims are “highly misleading”, noting that “they rely on aggregating fire activity across an enormous and climatically diverse region”. He tells Carbon Brief:

“A relatively quiet season in Russia can easily mask an exceptionally active season in France or Spain. If the analysis is focused on the regions actually experiencing the current fires, the picture is very different.

“The reality is that western Europe has experienced an extraordinary sequence of climate conditions this year.”

In contrast, the EFFIS provides a subset of wildfire data specifically for the area covered by the 27 nations of the EU, which, therefore, excludes Russia.

Another difference between the two datasets is that GWIS monitors all fires – including those on agricultural land that are intentionally set alight. The burned area as measured by GWIS contains significant cropland area.

By contrast, EFFIS uses land-cover data and other information to filter specifically for forest fires.

Looking at the EU-only data from EFFIS reveals that Europe is far from having its “quietest” year. The bloc’s burned area, as of 29 July, is almost 435,000 hectares (ha) – second only to 2022 for this time of year.

The area burned by wildfires in the EU in 2026 by end of July is second only to 2022. Weekly cumulative burned area (hectares). Line graph shows 2026 burned area reaching over 400,000 hectares by late July, far exceeding the 2006-2025 average. Source: EFFIS - (alt text generated by Google Gemini)

Notably, Wielicki has actually continued to post charts based on GWIS data, even after acknowledging that “includ[ing] all of Russia, including vast areas of Siberia…isn’t a good proxy for Europe”.

French fires

Even looking at EU-wide data misses the scale of this year’s wildfires for some individual countries.

The chart below shows the surge in burned area in France since mid-July.

For much of the first half of the year, the country was having a wildfire season that was only slightly above average in terms of total burned area. However, a notable uptick began in the first week of July.

The third week of the month saw France break its previous cumulative annual record by more than 19,000ha. That gap has widened as the fires continue to burn; as of 29 July, the cumulative burned area in France during 2026 was nearly 24,700ha above the previous record.

France's wildfires in 2026 are the most widespread in modern records. Weekly cumulative burned area (hectares). A line chart shows 2026 burned area sharply rising by August to over 90,000 hectares, well above the 2006-2025 range maximum of around 65,000 and average of 15,000. Source: EFFIS - (alt text generated by Google Gemini)

The fires in France follow a record-breaking June heatwave that “dried out vegetation across the region, allowing fires to spread quickly”, wrote the New York Times.

On 27 July, French president Emmanuel Macron called a “crisis cabinet meeting” in order to address the fires “ravaging several areas of south-west France”, said France 24.

More than 220,000 people have been evacuated due to the Gironde fire, west of Bordeaux, in “what may be France’s largest peacetime evacuation”, reported the Associated Press.

In the Conversation, Cunningham and two other University of Tasmania researchers write that evacuation orders “protec[t] human lives, but makes it more likely houses and other structures will burn if there’s no one to defend them”. They add:

“There is little doubt climate change has made France and Spain’s wildfires worse. They represent yet another reason to redouble our efforts to tackle climate change and stabilise our climate.”

Central Spain scorched

While Spain’s fire season has not broken records in the same way that France’s has, it is on track to be among the worst since EFFIS began reporting data in 2006.

The chart below shows the rapid increase in burned area in Spain since 8 July. The latest data from EFFIS reveal that, as of 29 July, Spain has almost matched its previous record at this point in the year. It is also nearly five times the average area burned for this time of year.

Line chart titled "Spain's 2026 wildfires are among the worst in modern records", subtitle "Weekly cumulative burned area (hectares)". By August, 2026 burned area surges past 200,000 hectares, rising far above the 2006-2025 average and near the upper historical range. Source: EFFIS - (alt text generated by Google Gemini)

In Spain, the wildfires have been concentrated in the central part of the country, near Madrid.

BBC News reported that the fires outside the capital have burned “an area more than twice as large as the city itself”.

Nearly 90,000 people were forced from their homes in central Spain by the fires, said the Associated Press.

Pedro Sánchez, Spain’s prime minister, called the fires a “painful expression” of climate change.

Meanwhile, the UK, French and Spanish governments have issued joint statements this week in response to the fires. The UK/Spain statement begins:

“This summer’s wildfires demonstrated that climate change was now a national security emergency facing Europe and threatening our way of life.”

The post Factcheck: No, Europe is not having its ‘quietest’ year for wildfires appeared first on Carbon Brief.

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Correcting climate ‘misperceptions’ may not boost climate action

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The general public often underestimate support for climate action, while overestimating the real-world actions taken by other people to address the problem, according to new research.

The study, published in Nature Climate Change, explores the differences between people’s support for climate change, their behaviour and their assumptions about other people’s behaviour.

It is based on multiple surveys of more than 5,000 people across Germany and the US.

The study expands on previous research on how the general public systematically underestimate the climate commitment of their peers.

The difference between actual and perceived support for climate action among the public is sometimes known as a “perception gap”.

The surveys tested how people’s perceptions of climate attitudes and behaviours relate to their own willingness to contribute and undertake “climate-friendly” actions.

One of the authors tells Carbon Brief that this perception gap is not due to “ignorance or bias”, but because “people are just not good at making good estimations”.

The research also reveals that people’s opinions and behaviours are more “nuanced than previously assumed” and suggests that simply “correcting misperceptions” does not automatically lead to greater climate action.

Measuring climate actions

The study notes that correcting the perception gap is often seen as a “cost-effective” way to promote public engagement and drive action to reduce the intensification and impacts of climate change.

Most studies that explore the perception gap have primarily focused on surveys that have asked people to report their willingness to support climate change.

In other words, researchers have relied upon people saying they would support efforts to tackle climate change, rather than measuring people’s real-world actions, such as financial donations, attending protests or changing their behaviour.

To fill this gap, the researchers behind the new study surveyed a total of more than 5,000 people in Germany and the US over 2024-25. Surveys were split across five different experiments, each focused on public perceptions of climate attitudes and how they relate to individuals’ actual behaviour:

Experiment What they did
Survey one Participants were asked if they were willing to donate 1% of their household income to WWF – and then were given the chance to do so. Follow-up questions asked participants to predict how many of their peers said “yes” and how many actually donated to the charity.
Survey two Participants read a constitutional complaint against the German government, led by Greenpeace, which demands for stricter climate policies. They were asked if they were willing to participate as a claimant and/or donate to the cause – and then were given the chance to do so. Follow-up questions asked participants to predict how many of their peers said “yes” and how many went on to support the complaint.
Survey three Participants were requested to complete an online “work for environmental protection task” where the more “pages” they completed resulted in more donations to WWF. They then predicted how many pages their peers completed. Participants also rated their individual behaviours and support for eight climate policies and then estimated the same for other people.
Surveys four and five Participants were split into three groups that were either informed that 4% of participants had donated 1% of their household income to WWF, that “68% were willing to contribute” or given no information. They then had to state whether they were willing to support WWF and then were given the opportunity to do so.

The authors note that Germany and the US are two of the “top 10 CO2 emitters” and are places where climate action is “especially necessary”. However, they add that the two countries are not reflective of “diverse cultural contexts” and further research is needed across the world.

The perception gap

The researchers find that most of their participants supported climate action, but much fewer actually performed verifiable behaviours.

For example, survey one finds that 37% of participants said they were willing to donate to WWF, yet just 4% did when given the opportunity.

Participants generally overestimated the climate actions of their peers, predicting that 23% of other people donated. Willingness, on the other hand, was slightly underestimated with respondents averaging around 34%.

The results from survey three suggest that this perception gap is likely due to general cognitive processes within the human brain that make accurate estimations about large groups difficult, say the authors.

The chart below shows the actual percentage of people who supported different environmental policies and performed climate-friendly behaviours (blue dots) compared to average predictions from the surveys (red dots).

They reveal a “consistent pattern” where “small proportions were overestimated and large ones were underestimated”, the authors say, driving predictions towards the middle. This phenomenon is known as “regression to the mean”.

In other words, where public support for a policy was high, participants in the survey estimated it was lower than it was. When the support was lower, estimates would be higher.

Range plot titled “Participants under- and overestimate climate-friendly actions and attitudes" with the subtitle "Selection of individual behaviours and policy support". Source: Tiede, et al (2026). The chart compares the actual percentage (blue dots) with the mean estimated percentage (red dots) across two main categories: Policy support and Individual behaviours. Each category is split into under-estimates and over-estimates. Under policy support, respondents underestimated public support for popular measures and overestimated public support for unpopular, restrictive policies. Under individual behaviours, common habits were strongly underestimated and less common personal choices were strongly overestimated.
Comparison of actual percentage (blue dots) with the mean estimated percentage (red dots) across two main categories: policy support and individual behaviours. Source: Tiede, et al (2026).

The study finds that individual and environmental factors played a role in shaping people’s perceptions of their peers’ climate actions, which were distinct from general misestimations.

For example, people who were already involved in climate action, had more frequent climate discussions and consumed more climate-focused news and media predicted a higher proportion of climate support “across the board”.

The results from the fourth and fifth surveys show that knowing the context of other people’s beliefs and behaviour in surveys can impact the attitudes of participants.

Participants that were told that 68% of people were willing to donate 1% of their household income to the WWF were more willing to donate.

In contrast, participants that were told that 4% of people actually donated did not report more willingness to “discuss climate change, sign petitions or donate” than the control group.

However, there was no obvious impact on actual donations for any of the three groups, the study notes.

Lead study author Dr Kevin Tiede, scientific managing director of the Institute for Planetary Health Behaviour at the University of Erfurt, tells Carbon Brief that the findings suggest that “just telling people how many people support climate action is likely not enough to really change something”.

However, Tiede adds that “direct comparability” between people saying they would donate and actually donating is “limited” and that giving people more time to answer and autonomy over where to donate might result in more people taking action.

‘Pluralistic ignorance’

Tiede explains that the study findings demonstrate the existence of “pluralistic ignorance”, where a person believes their own views differ from the majority.

For climate change, this means that the “vast majority of people around the world support climate action, but people considerably underestimate the extent of this support”, the study says.

However, the surveys reveal that pluralistic ignorance “in the climate domain” is more nuanced than previously thought, say the authors.

Prof Madalina Vascleanu, an assistant professor at Stanford University’s Doerr School of Sustainability, who was not involved in the study, tells Carbon Brief that encouraging climate action is complex.

It may take multiple and repeated “attempts” at effective communication, or for people to directly “experience” the “norm” that climate change is widely supported, she says, rather than simply being told.

“Observable” behaviours, such as “identity signalling” – which could involve anything from protesting to vegetarianism – might have more of an impact on encouraging climate action among peers than “private behaviours like donations”, she adds.

The study is a “great addition to the literature”, Vascleanu says, because “correcting” the perception gap did not have an effect on climate-friendly behaviour, as “scholars had previously assumed”. She adds that it has “sparked several new hypotheses” that her “lab is now working on”.

Prof Mauro Bertolotti, associate professor of social psychology at the Università Cattolica del Sacro Cuore, explains that the “attitude-behaviour gap” revealed by the research is a “rather common finding”.

However, he is “sceptical” of the “simplified and abstract” measures, warning that experiment environments often come with “assumptions and expectations” that are different from real life.

As a result, they might not “replicate” the process people go through when choosing to “make a donation to an environmental cause”, he says.

‘Targeted’ communication strategies

The researchers argue that it is more effective to focus on “targeted” communication strategies – encouraging climate-friendly behaviours that aim to reach the majority who already support climate action, rather than trying to convert climate sceptics.

They call for attention to be paid to the attitude-behaviour gap between people saying they support efforts to tackle climate change and following up with real-world climate actions.

The study suggests strategies for decision-makers to reduce the attitude-behaviour gap, such as “facilitating climate-friendly behaviour” with “convenience and subsidies”. They also recommend ensuring environmental policy prioritises fairness to gain visible and widespread public support.

They add that the public would benefit from understanding the “effectiveness and co-benefits” of climate action.

Tiede, K.E. et al. (2026) People systematically under- and overestimate public engagement in climate action, Nature Climate Change, https://doi.org/10.1038/s41558-026-02668-z

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