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Welcome to Carbon Brief’s DeBriefed.
An essential guide to the week’s key developments relating to climate change.

This week

Net-zero media storm

NET-ZERO ATTACKED: The UK’s Labour government had to defend its net-zero policies after comments by former prime minister Tony Blair in a thinktank report sparked a frenzied media storm. Former Labour leader Blair said the world’s current approach to tackling climate change is “failing”, the Independent reported. (More accurately, Blair stated that “phasing out fossil fuels in the short term…is doomed to fail”, rather than at all, as highlighted in a factcheck by Carbon Brief’s Simon Evans on social media.)

MEDIA FRENZY: Blair’s comments were featured prominently – and inaccurately – by the UK’s climate-sceptic right-leaning media. In frontpage coverage, the Daily Telegraph described Blair’s comments as a direct “attack” on prime minister Keir Starmer, despite acknowledging in its coverage that Blair did not mention the UK. A frontpage Times story called Blair’s intervention the “latest sign that the mainstream consensus on green policies is collapsing”. (Carbon Brief has just published an analysis showing the same media have published 65 editorials attacking energy secretary Ed Miliband in the first four months of 2025.)

‘CLUMSY’ CRITICISM: BBC News reported that Starmer has since defended his net-zero policies in parliament. According to the Guardian, Downing Street “forced” Blair to “row back from his criticism”, after “furious Labour politicians warned he had given a boost to Tory and Reform on the eve of the local elections”. A former employee of Blair called his intervention “clumsy” and his ideas “expensive” and “unpopular” in Prospect magazine.

Around the world

  • CANADA FOR CARNEY: Mark Carney’s Liberal party won this week’s Canadian elections, Climate Home News reported. The outlet said that Canadians chose the  “former central banker and UN climate envoy” over the “anti-climate action Conservative party of Pierre Poilievre”.
  • 100 DAYS: As the Guardian and other outlets covered Donald Trump’s first 100 days in office, the New York Times reported that his administration had dismissed hundreds of experts working on the country’s National Climate Assessment report.
  • UPHILL BATTLE: The COP30 president has “admitted” that this year’s talks will be a “slightly uphill battle” due to economic turmoil and Trump’s removal of the US from the Paris Agreement, the Guardian reported. 
  • AIRLINE EMISSIONS: European airline emissions are on course to exceed pre-pandemic levels this year, according to the Financial Times.
  • NEW NORMAL: Much of India and Pakistan is “sweltering” under early heatwaves, the Guardian reported. The newspaper highlighted that a Pakistani city in Sindh province recorded temperatures of 50C – nearly 8.5C above the April average.

38%

The percentage of global losses from “natural catastrophes” that were insured in 2023, according to a report by Zurich Insurance Group. The analysis found total losses of $280bn.


Latest climate research

  • A combination of climate change and failure to meet sustainable development goals could contribute to an increase in global antimicrobial resistance by 2050, according to a study published in Nature Medicine.
  • A paper published in Science Advances found that “co-exposure” to extreme heat and wildfire smoke has increased across 11 states in the western US over 2006-20.
  • Just 2% of the UK Climate Change Committee’s (CCC’s) recommendations to the UK government over 2009-20 were accepted in full, according to new research published in Climate Policy

(For more, see Carbon Brief’s in-depth daily summaries of the top climate news stories on Monday, Tuesday, Wednesday, Thursday and Friday.)

Captured

Electricity generation capacity in Spain, megawatts (MW), from 27-29 April, showing the drop in generation.

On Monday, a blackout across most of Spain and Portugal plunged the countries into chaos. While the initial trigger remains uncertain, the nationwide blackouts took place after around 15 gigawatts (GW) of electricity generating capacity – equivalent to 60% of Spain’s power demand at the time – dropped off the system within the space of five seconds (as illustrated above). At the time, solar accounted for 59% of the country’s electricity supplies, wind nearly 12%, nuclear 11% and gas around 5%. As the crisis was still unfolding, many media outlets were quick to blame renewables, net-zero or the energy transition for the blackout, despite very little available data or information. Carbon Brief has examined what is currently known about the power cuts and how the media has responded.

Spotlight

Trump’s ‘cascading’ impact on European climate science

This week, scientists attending the European Geosciences Union meeting in Vienna tell Carbon Brief how cuts to science funding and the dismantling of climate agencies in the US is impacting their work.

Dr Shouro Dasgupta, environmental economist at Fondazione CMCC in Italy:

“Trump’s decision to cut funding on climate science in the US will likely have cascading effects on both European research and global climate resilience. The transatlantic partnership is built on shared values and decades of cooperation. It has been crucial for advancing global understanding of climate change through joint efforts in Earth observation, including data infrastructure and joint policy innovation.

For example, several European Centre for Medium-Range Weather Forecasts products that rely on National Oceanic and Atmospheric Administration (NOAA) data streams will now face gaps in input data.

A major loss has been the defunding of Famine Early Warning Systems Network – a critical system that operated in more than 30 famine-prone countries and was the only consistent source of regular famine and food insecurity early warning.

Trump’s actions will slow our ability to understand and respond effectively to the climate crisis, a loss that, ultimately, impacts everyone.”

Dr Carl Schleussner, climate scientist at the International Institute for Applied Systems Analysis in Austria:

“I’m concerned about the credibility of science and communication. Attacks on science and scientific integrity are being driven by social media and alternative media platforms – and artificial intelligence (AI) systems can generate something that looks like a scientific paper, [but] is complete rubbish. [AI] basically drives down the cost of fakes to zero. We are running a heightened risk of climate misinformation.

Trump’s special advisor [Elon Musk] owns one of the largest social media networks and Grok [an AI system] can produce something like a paper in no time. Trying to undermine [science] by flooding the zone with sh*t is a declared strategy – and it is the total antithesis to science.

It is one thing to rebut people that are paid to ask stupid questions about the validity of climate science, as we’ve done for decades. [But it is another] to fight an AI system that produces all this bullsh*t in no time. As a scientific community, we are not equipped to fight back…I hope other actors in society are thinking about how to support climate science and the integrity of science and its role in society.”

Dr Eva Pfannerstill, atmospheric chemist at Forschungszentrum Jülich in Germany:

“The NOAA cuts are definitely impacting the air-quality research community and rippling to Europe. For several months this year, our NOAA colleagues were not allowed to join online meetings with us anymore, stalling the fruitful discussions and collaborations we have had for many years. One NOAA colleague was supposed to give an invited talk at EGU, but he was not allowed to travel.

Thinking back to last year’s EGU where we hung out with many NOAA colleagues, it was such a short time ago – but seems almost like another era where trans-Atlantic scientific cooperation and US leadership in atmospheric research were a given. Now our US colleagues are scared – scared to put anything in writing that could be used against them, scared of losing their funding and/or jobs.”

Prof Sonia I Seneviratne, climate scientist at the Institut für Atmosphäre und Klima at ETH Zurich in Switzerland and Intergovernmental Panel Climate Change Working Group 1 vice chair:

“The current attacks on climate research in the US are extremely concerning. A full generation of young researchers have been fired from their positions and are unlikely to stay in climate research. While some might move to Europe or other continents, it is not in the interest of the global climate research community to see such a weakening and even a destruction of climate research in the US.

While some decisions against climate research institutions and researchers might be annulled by the courts, several might be near impossible to reverse. For instance, buildings [that] will no longer be available for research institutions and researchers [that] move on to other positions out of concerns for their job security.

Attacks on climate science won’t change the facts and the reality of climate change – but they weaken our possibilities to address the climate crisis.”

Watch, read, listen

POWER PLAYER: For Common Dreams, Bill McKibben claimed that Mark Carney knows “roughly 20 times” as much about climate and energy economics than any other leader.

CONNECTED CRISES: In a new book, Climate Injustice, climate scientist Dr Friederike Otto argued that global justice is at the core of the solution to climate change.

SONG AND SEED: Al Jazeera ran a long-read about efforts led by Brazil’s Indigenous Maxakali community to protect and restore the rainforest in Minas Gerais.

Coming up

Pick of the jobs

DeBriefed is edited by Daisy Dunne. Please send any tips or feedback to debriefed@carbonbrief.org.

This is an online version of Carbon Brief’s weekly DeBriefed email newsletter. Subscribe for free here.

The post DeBriefed 2 May 2025: Iberian blackout; Tony Blair’s ‘clumsy’ comments; Trump’s ‘cascading’ impact on European climate science appeared first on Carbon Brief.

DeBriefed 2 May 2025: Iberian blackout; Tony Blair’s ‘clumsy’ comments; Trump’s ‘cascading’ impact on European climate science

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Scientists Deploy First Satellite Tag on a Leatherback Sea Turtle in Ecuador to Better Reveal Gaps in Ocean Protection

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Tracking the turtle’s movements could help identify where high-risk fishing areas overlap with the critically endangered species.

Just after 3 a.m. on a recent Friday morning, a 4.5-foot-long leatherback sea turtle covered her freshly dug nest with sand, sweeping and packing it into place with steady strokes of her flippers just above the high tide along a remote, rugged stretch of Ecuador’s Pacific coast.

Scientists Deploy First Satellite Tag on a Leatherback Sea Turtle in Ecuador to Better Reveal Gaps in Ocean Protection

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Green Climate Fund picks locations for five developing country hubs

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The UN’s flagship climate fund has selected five locations for its new regional offices, a move aimed at bringing it physically closer to developing countries and making its finance easier to access.

After fraught discussions during a meeting last week, the board of the Green Climate Fund (GCF) decided in a secret vote on Saturday to open regional offices in Panama City, Amman in Jordan, Suva in Fiji, Nairobi in Kenya and Abidjan in Côte d’Ivoire. The African office will be split across two locations to better serve the continent with the largest number of countries and projects supported by the fund.

The decision marks a significant shift for the fund, which has operated from its headquarters in Songdo, South Korea, since its launch in 2013.

“This is a landmark moment for [the] GCF,” said the fund’s executive director Mafalda Duarte. “It has taken a lot of work, careful negotiation and persistent advocacy for a model that will bring us closer to the countries, to our partners and the communities we were created to serve”.

‘Less delay, more action’

The new offices are expected to act as the GCF’s front line, working more closely with governments, the private sector and civil society to improve access to climate finance and support the delivery of projects aimed at cutting emissions and strengthening resilience to climate impacts.

Welcoming the decision in a LinkedIn post, Fiji’s Permanent Secretary for the environment and climate change Sivendra Michael described it as “a win for the entire Pacific”, citing “long hours” and “tough negotiations” behind the outcome. “Less delay, more action — real support where it matters most,” he added.

    A total of 43 countries applied to host the new offices, with 16 making a final shortlist after the GCF secretariat assessed bids on criteria including cost, connectivity and the ability to attract a “world-class workforce” through quality of life and access to international schools.

    Panama emerged as the top-ranked location overall, according to a document seen by Climate Home News, while some selected hosts, including Amman and Abidjan, scored lower than rival candidates in their regions.

    Establishing the new hubs is expected to cost an initial $6.5 million, but the fund anticipates these upfront expenses will be offset over time through operational savings, including lower staff and travel costs.

    First Palestinian entity approved

    The GCF board also accredited the first organisation in Palestine that will be able to directly apply for and access funding.

    Created by the Palestinian Authority in the West Bank, the Municipal Development and Lending Fund supports local infrastructure projects and services. Working with partners, including the World Bank, it is developing projects to help communities cope with escalating climate risks such as drought and extreme heat.

    In the West Bank, which is occupied by Israel, just under half of the population lives in areas classified as having high to very high climate exposure, according to a recent study.

    The post Green Climate Fund picks locations for five developing country hubs appeared first on Climate Home News.

    Green Climate Fund picks locations for five developing country hubs

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    Island nations fight to save cultural heritage from climate change

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    Farmers and fishermen in the Maldives have long relied on an ancient calendar to guide their daily lives.

    The Nakaiy system divides the year into 27 distinct periods, each named after a star or constellation in the night sky.

    Any one period in the calendar tells you about expected weather and tidal patterns, navigational routes, and fishing conditions. The Nakaiy was created through centuries of careful observation and local knowledge, passed down through families as an essential tool for survival.

    But things are now changing. The climate crisis is leading to more extreme weather events across the Indian Ocean island nation and upending the Nakaiy calendar.

    “When you go and speak to communities and ask them what kind of impacts they are facing, a lot of elders will tell you that the weather, it doesn’t follow the calendar anymore,” explained Aishath Reesha Suhail, a programme officer in the Maldives’ Ministry of Tourism and Environment.

    As the effects of climate change worsen, it is a real prospect that the Nakaiy may be abandoned by local people, representing a major cultural loss to the Maldives.

    ‘Systemic and growing threat’

    With extreme weather becoming the norm, communities are observing a domino effect of consequences in their everyday lives. The slow onset of heritage loss is now being seen across continents, but notably among small islands in remote parts of the ocean.

    “Climate change represents a systemic and growing threat to cultural heritage worldwide,” a UNESCO spokesperson told Climate Home, adding that the World Heritage Committee has identified climate change as “one of the most significant long-term risks affecting properties across all regions.”

    UNESCO, the UN body for education, science and culture, defines the loss of cultural heritage as “the erosion of traditional knowledge systems, craftsmanship, social practices and identity, particularly where communities are displaced or livelihoods disrupted”. A clear example is historical sites and even entire islands washed into the ocean as a result of rising sea levels and coastal erosion. 

    The Maldives is dealing with such a situation now. The Koagannu Cemetery is a 900-year-old resting place, located on the country’s southernmost atoll, a mere 50 metres from the shoreline. The monument’s intricate coral gravestones are being actively threatened by the encroaching Indian Ocean. 

    The government and local community have responded to this challenge with emergency protection measures. Sandbags and concrete structures have been installed along the coastline, complemented by large numbers of palm trees to create a seawall. A wider solution is ‘beach nourishment’, a common practice in the Maldives where sand from elsewhere is brought in to replace what has been lost through erosion. Taken together, these solutions have so far protected the cemetery.

    Pacific islands push back against growing climate threats

    Among the many issues climate change creates, cultural heritage is not always front of mind. In the Maldives, one of the main barriers people face is awareness. “Most of what we are dealing with relates to the erosion of our islands along with areas such as fisheries… but we are quite limited in our capacity to do something about it,“ Suhail said.

    “We don’t understand the full breadth of the issue at present because we haven’t been able to do extensive research on the matter,” she added. However, assessing the extent of the damage – and how to respond effectively – is a key priority for the government, outlined in its latest climate plan, known as a Nationally Determined Contribution, and as part of its National Adaptation Plan process.

    Fishing is at the core of the country’s culture and identity, employing thousands of people. Most dishes include fish – “we have it for breakfast, lunch and dinner,” Suhail noted – but the climate crisis and overfishing are shifting how and when communities can fish. Tuna makes up 98% of all fish caught in the Maldives, but warmer ocean temperatures are changing migratory patterns, pushing the species into deeper, colder waters.

    As a critical economic and cultural resource, the government has outlined a range of solutions to protect the fisheries sector in its first Biennial Transparency Report to the UN. These include using real-time tracking data to improve the efficiency of fishing operations; investing in canneries to increase fish storage; and diversifying away from tuna through marine farming.

    Koagannu Cemetery, a 900-year-old resting place in the Maldives, is threatened by rising sea levels in the Indian Ocean. (Image: Ashwa Faheem) 

    Koagannu Cemetery, a 900-year-old resting place in the Maldives, is threatened by rising sea levels in the Indian Ocean. (Image: Ashwa Faheem) 

    Culture and nature go hand-in-hand

    The same pattern is playing out elsewhere.

    Palau and the Maldives are not close to one another. The two states are separated by around 4,000 miles and sit in different corners of the ocean. But both are experiencing very similar climate challenges, based on their position as a set of scattered, low-lying islands surrounded by an imposing body of blue water.

    In the same way as the Maldives, Palau’s cultural heritage is closely tied to “land, coastlines and traditional food systems,” according to Toni Soalabla, at the Palau Office of Climate Change.

    “Many of the places that hold stories, history and identity of our communities are located along the coast and are increasingly exposed to erosion and sea level rise,” she said.

    One of these places is Ngerutechei village, reportedly the oldest in Palau, and home to ancient stone paths and carvings. The village provides a glimpse into the past social values and culture of the people in this western Pacific nation.

    How Vanuatu is facing up to rising climate risks

    As part of the development of Palau’s National Adaptation Plan, the government has worked with local leaders to identify similar sites of cultural significance. The plan encourages communities to use their own knowledge to create protective measures for these sites.

    Climate change is also prompting communities to take up traditional land and food practices again. These include cultivating taro, a stable food source that has historically supported water, soil and food security on the islands. 

    “These systems developed over generations in response to local environmental conditions, so strengthening them today is both a climate adaptation measure and a way of maintaining cultural knowledge that might otherwise fade,” said Soalabla.

    Cultural practices in Palau have developed alongside the natural ecosystems that people rely on to survive. It is within this context that researchers believe adaptation policies should be created. Recognising this relationship “can strengthen both community identity and environmental resilience at the same time”, according to Soalabla.

    Taro farming is making a return to Palau as a traditional source of food security. (Image: Kiara Worth / IISD / Palau Office of Climate Change)

    Taro farming is making a return to Palau as a traditional source of food security. (Image: Kiara Worth / IISD / Palau Office of Climate Change)

    An ancient monolith in Ngerutechei village is being protected against coastal erosion. (Image: Kiara Worth / IISD / Palau Office of Climate Change).

    An ancient monolith in Ngerutechei village is being protected against coastal erosion. (Image: Kiara Worth / IISD / Palau Office of Climate Change).

    Heritage on the global stage

    The issue of cultural loss has not gone unnoticed in international climate negotiations. 

    Small island states such as the Maldives have used their role at the UN to push for greater awareness and action, with some key successes.

    In 2015, the Paris Agreement established a Global Goal on Adaptation (GGA) which recognised that countries needed to do something about climate change now and not later. However, it took six years before a framework and a set of adaptation targets were agreed at the UN climate summit in Glasgow to pursue this goal. 

    From this came the establishment of seven overall themes – from poverty eradication to access to health – to guide adaptation action and a set of around 60 indicators to measure progress against the targets.

    World leaders invited to see Pacific climate destruction before COP31

    Emilie Beauchamp, an adaptation specialist at the International Institute for Sustainable Development (IISD), said that “cultural heritage was highlighted as one of the global priorities [of the GGA Framework] and is one of the seven themes, so it is considered very important by the international community.”

    The much-debated set of indicators, only finalised in Belém at last year’s COP30, include five related to cultural heritage with a focus on preserving cultural practices and important sites that are “guided by traditional knowledge, Indigenous Peoples’ knowledge and local knowledge systems”. A spokesperson for UNESCO said the inclusion of heritage indicators “marks an important recognition that climate impacts extend beyond economic losses”. 

    While critics said the set of final indicators was rushed through by the Brazilian presidency, they now serve as guidance for national governments that wish to implement plans to protect their common heritage. The missing piece of the puzzle remains how to finance these plans – something notably absent from the Belém text, which made clear that the adaptation indicators “do not create new financial obligations or commitments, nor liability or compensation”.

    The lack of financial commitments proved disappointing for many small states grappling with how to prevent their cultural history from being entirely forgotten, especially at a time when adaptation finance remains below requirements. A recent UNEP report found that developing nations would need an estimated US$310 billion per year in 2035 to adapt to climate change, while current public financing was around $26 billion.

    At these low levels “only a small percentage of what the framework outlines could be implemented,” according to Beauchamp.

    Recent research from WRI and UNESCO found 73% of non-marine World Heritage Sites are threatened by at least one severe water risk.

    Recent research from WRI and UNESCO found 73% of non-marine World Heritage Sites are threatened by at least one severe water risk.

    The challenge of cultural heritage

    When looking at low-lying islands on a map, they can appear as specks of land amid a vast ocean. Many of the stories from these remote places go unnoticed. But the specks represent millennia of human culture that is slowly being lost to the ocean.

    While the international community has now recognised the problem and solutions exist, the recurring issue of scarce finance may prevent governments from taking sustained action. Island communities have already been forced to move home as sea levels rise, leaving behind their cultural connections to a place.

    The value of any cultural asset, or of human heritage, can be judged by how it is engaged with over generations. Without human intervention, many historical sites, language, cuisine and other local customs would become a forgotten part of history. The rapid onset of climate change brings the role of cultural heritage into sharp relief, challenging communities to decide in real time what they value, what deserves saving, and how to achieve that.

    Stories of cultural loss are not confined to small islands but it is here where the challenge is presenting most acutely. The experiences of these vulnerable nations in protecting their heritage will provide the litmus test for effective adaptation responses elsewhere.

    Adam Wentworth is a freelance writer based in Brighton, UK.

    (Main image: The Isdhoo Havitha is an ancient Buddhist monastery in the Maldives, located moments from the shoreline. Photo: Ashwa Faheem) 

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