Welcome to Carbon Brief’s DeBriefed.
An essential guide to the week’s key developments relating to climate change.
This week
Trump vs world
TILTING AT ‘WINDMILLS’: At the World Economic Forum meeting in Davos, Switzerland, Donald Trump was quoted by Reuters as saying – falsely – that China makes almost all of the world’s “windmills”, but he had not “been able to find any windfarms in China”, calling China’s buyers “stupid”. The newswire added that China “defended its wind power development” at Davos, with spokesperson Guo Jiakun saying the country’s efforts to tackle climate change and promote renewable energy in the world are “obvious to all”.
SPEECH FACTCHECKED: The Guardian factchecked Trump’s speech, noting China has more wind capacity than any other country, with 40% of global wind generation in 2024 in China. See Carbon Brief’s chart on this topic, posted on BlueSky by Dr Simon Evans.
GREENLAND GRAB: Trump “abruptly stepped back” from threats to seize Greenland with the use of force or leveraging tariffs, downplaying the dispute as a “small ask” for a “piece of ice”, reported Reuters. The Washington Post noted that, while Trump calls climate change “a hoax”, Greenland’s described value is partly due to Arctic environmental shifts opening up new sea routes. French president Macron slammed the White House’s “new colonial approach”, emphasising that climate and energy security remain European “top priorities”, according to BusinessGreen.
Around the world
- EU MILESTONE: For the first time, wind and solar generated more electricity than fossil fuels in the EU last year, reported Reuters. Wind and solar generated 30% of the EU’s electricity in 2025, just above 29% from plants running on coal, gas and oil, according to data from the thinktank Ember covered by the newswire.
- WARM HOMES: The UK government announced a £15bn plan for rolling out low-carbon technology in homes, such as rooftop solar and heat pumps. Carbon Brief’s newly published analysis has all the details.
- BIG THAW: Braving weather delays that nearly “derail[ed] their mission”, scientists finally set up camp on Antarctica’s thawing Thwaites glacier, reported the New York Times. Over the next few weeks, they will deploy equipment to understand “how this gargantuan glacier is being corroded” by warming ocean waters.
- EVS WELCOME: Germany re-introduced electric vehicle subsidies, open to all manufacturers, including those in China, reported the Financial Times. Tesla and Volvo could be the first to benefit from Canada’s “move to slash import tariffs on made-in-China” EVs, said Bloomberg.
- SOUTHERN AFRICA FLOODS: The death toll from floods in Mozambique went up to 112, reported the African Press Agency on Thursday. Officials cited the “scale of rainfall” – 250mm in 24 hours – as a key driver, it added. Frontline quoted South African president Cyril Ramaphosa, who linked the crisis to climate change.
$307bn
The amount of drought-related damages worldwide per year – intensified by land degradation, groundwater depletion and climate change – according to a new UN “water bankruptcy” report.
Latest climate research
- A researcher examined whether the “ultra rich” could and should pay for climate finance | Climatic Change
- Global deforestation-driven surface warming increased by the “size of Spain” between 1988 and 2016 | One Earth
- Increasing per-capita meat consumption by just one kilogram a year is “linked” to a nearly 2% increase in embedded deforestation elsewhere | Environmental Research Letters
(For more, see Carbon Brief’s in-depth daily summaries of the top climate news stories on Monday, Tuesday, Wednesday, Thursday and Friday.)
Captured

For the first time since monitoring began 15 years ago, there were more UK newspaper editorials published in 2025 opposing climate action than those supporting it, Carbon Brief analysis found. The chart shows the number of editorials arguing for more (blue) and less (red) climate action between 2011-2025. Editorials that took a “balanced” view are not represented in the chart. All 98 editorials opposing climate action were in right-leaning outlets, while nearly all 46 in support were in left-leaning and centrist publications. The trend reveals the scale of the net-zero backlash in the UK’s right-leaning press, highlighting the rapid shift away from a political consensus.
Spotlight
Do the oceans hold hope for international law?
This week, Carbon Brief unpacks what a landmark oceans treaty “entering into force” means and, at a time of backtracking and breach, speaks to experts on the future of international law.
As the world tries to digest the US retreat from international environmental law, historic new protections for the ocean were quietly passed without the US on Saturday.
With little fanfare besides a video message from UN chief Antonio Guterres, a binding UN treaty to protect biodiversity in two-thirds of the Earth’s oceans “entered into force”.
What does the treaty mean and do?
The High Seas Treaty – formally known as the “biodiversity beyond national jurisdiction”, or “BBNJ” agreement – obliges countries to act in the “common heritage of humankind”, setting aside self-interest to protect biodiversity in international waters. (See Carbon Brief’s in-depth explainer on what the treaty means for climate change).
Agreed in 2023, it requires states to undertake rigorous impact assessments to rein in pollution and share benefits from marine genetic resources with coastal communities and countries. States can also propose marine protected areas to help the ocean – and life within it – become more resilient to “stressors”, such as climate change and ocean acidification.
“It’s a beacon of hope in a very dark place,” Dr Siva Thambisetty, an intellectual property expert at the London School of Economics and an adviser to developing countries at UN environmental negotiations, told Carbon Brief.
Who has signed the agreement?
Buoyed by a wave of commitments at last year’s UN Oceans conference in France, the High Seas treaty has been signed by 145 states, with 84 nations ratifying it into domestic law.
“The speed at which [BBNJ] went from treaty adoption to entering into force is remarkable for an agreement of its scope and impact,” said Nichola Clark, from the NGO Pew Trusts, when ratification crossed the 60-country threshold for it to enter into force last September.
For a legally binding treaty, two years to enter into force is quick. The 1997 Kyoto Protocol – which the US rejected in 2001 – took eight years.
While many operative parts of the BBNJ underline respect for “national sovereignty”, experts say it applies to an area outside national borders, giving territorial states a reason to get on board, even if it has implications for the rest of the oceans.
What is US involvement with the treaty?
The US is not a party to the BBNJ’s parent Law of the Sea, or a member of the International Seabed Authority (ISA) overseeing deep-sea mining.
This has meant that it cannot bid for permits to scour the ocean floor for critical minerals. China and Russia still lead the world in the number of deep-sea exploration contracts. (See Carbon Brief’s explainer on deep-sea mining).
In April 2025, the Biden administration issued an executive order to “unleash America’s offshore critical minerals and resources”, drawing a warning from the ISA.
This Tuesday, the Trump administration published a new rule to “fast-track deep-sea mining” outside its territorial waters without “environmental oversight”, reported Agence France-Presse.
Prof Lavanya Rajamani, an expert in international environmental law at the University of Oxford, told Carbon Brief that, while dealing with US unilateralism and “self-interest” is not new to the environmental movement, the way “in which they’re pursuing that self-interest – this time on their own, without any legal justification” has changed. She continued:
“We have to see this not as a remaking of international law, but as a flagrant breach of international law.”
While this is a “testing moment”, Rajamani believes that other states contending with a “powerful, idiosyncratic and unpredictable actor” are not “giving up on decades of multilateralism…they just asking how they might address this moment without fundamentally destabilising” the international legal order.
What next for the treaty?
Last Friday, China announced its bid to host the BBNJ treaty’s secretariat in Xiamen – “a coastal hub that sits on the Taiwan Strait”, reported the South China Morning Post.
China and Brussels currently vie as the strongest contenders for the seat of global ocean governance, given that Chile made its hosting offer days before the country elected a far-right president.
To Thambisetty, preparatory BBNJ meetings in March can serve as an important “pocket of sanity” in a turbulent world. She concluded:
“The rest of us have to find a way to navigate the international order. We have to work towards better times.”
Watch, read, listen
OWN GOAL: For Backchannel, Zimbabwean climate campaigner Trust Chikodzo called for Total Energies to end its “image laundering” at the Africa Cup of Nations.
MATERIAL WORLD: In a book review for the Baffler, Thea Riofrancos followed the “unexpected genealogy” of the “energy transition” outlined in Jean-Baptiste Fressoz’s More and More and More: An All-Consuming History.
REALTY BITES: Inside Climate News profiled Californian climate policy expert Neil Matouka, who built a plugin to display climate risk data that real-estate site Zillow removed from home listings.
Coming up
- 26 January: International day of clean energy
- 27 January: India-EU summit, New Delhi
- 31 January: Submit inputs on food systems and climate change for a report by the UN special rapporteur on climate change
- 1 February: Costa Rica elections
Pick of the jobs
- British Antarctic Survey, boating officer | Salary: £31,183. Location: UK and Antarctica
- National Centre for Climate Research at the Danish Meteorological Institute, climate science leader | Salary: NA. Location: Copenhagen, with possible travel to Skrydstrup, Karup and Nuuk
- Mongabay, journalism fellows | Stipend: $500 per month for 6 months. Location: Remote
- Climate Change Committee, carbon budgets analyst | Salary: £47,007-£51,642. Location: London
DeBriefed is edited by Daisy Dunne. Please send any tips or feedback to debriefed@carbonbrief.org.
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The post DeBriefed 23 January 2026: Trump’s Davos tirade; EU wind and solar milestone; High seas hope appeared first on Carbon Brief.
DeBriefed 23 January 2026: Trump’s Davos tirade; EU wind and solar milestone; High seas hope
Climate Change
Introducing Project Cosmos: Carbon Brief’s ‘universe’ of climate science
Carbon Brief’s Project Cosmos is a major collaborative effort to build the world’s largest and most complete database of climate change research.
The Cosmos database – which features more than 1.8m individual publications linked by 40m citation relationships – captures the vast body of human knowledge about climate change that has accumulated over more than a century of academic study.
Cosmos is a major new resource, which has taken more than 18 months to research and build, with help and guidance from a specialist team of academics.
Carbon Brief embarked on Project Cosmos to map and analyse the scientific community’s foundational knowledge about climate change.
This includes, at first, ranking the most highly cited academic publications, authors and institutions.
Together, this series of rankings is known as the Cosmos 500.
But, over time, the database will reveal, for example, how interest in different areas of climate science has changed over time, plus identify potential knowledge gaps and, thus, opportunities for future research.
The post Introducing Project Cosmos: Carbon Brief’s ‘universe’ of climate science appeared first on Carbon Brief.
https://www.carbonbrief.org/introducing-project-cosmos-carbon-briefs-universe-of-climate-science/
Climate Change
Two to tango: How governments can unlock private investment for national climate goals
Even the most ambitious national climate plans aimed at cutting emissions to meet the 1.5C global warming goal in the Paris Agreement often lack a vital ingredient for success: private investment.
With governments facing fiscal and political pressures, attracting private capital will be crucial for accelerating climate action in the coming years.
Yet many Nationally Determined Contributions (NDCs) still do not have the sector-specific plans, economic incentives, policy certainty, infrastructure investment and ongoing dialogue needed to break silos between the public and private sectors and bring more businesses on board.
“If you just have the high-level (NDC) target from the government in a vacuum, it’s not going to spur much business action,” said Greg Briner, senior manager for policy at the We Mean Business Coalition, which works with companies pushing for stronger climate action.
“But that target combined with … more specific policies and measures that get put in place as a result of that target-implementing process, or as a result of the NDCs, is where the magic starts happening,” he explained.
NDCs: late and inadequate
NDCs are voluntary climate action plans created by countries under the Paris Agreement. They include commitments such as expanding renewable energy, reducing fossil fuels, halting deforestation and other measures to cut greenhouse gas emissions and limit global warming.
First submitted in 2015 for the Paris Agreement, NDCs should be updated with more ambitious targets every five years, although some governments have not stuck to this timetable.
Last year, most countries missed an initial February deadline to finalise the latest round of plans, known as “NDCs 3.0” – and at least 50 countries, mainly developing nations, have still not done so.
Paris Agreement committee snubbed over missing NDC climate plans
Although these national plans have helped drive emissions reductions in some sectors – including falling deforestation rates and greater investments in renewables – climate experts say progress remains far too slow to meet the Paris goals and urgent action is now needed.
Last November, the UN climate body projected that global emissions would fall by around 12% from 2019 levels by 2035, based on a preliminary assessment of new NDCs announced by countries that produce nearly 70% of the world’s greenhouse gases.
The Intergovernmental Panel on Climate Change has said countries should cut emissions far more rapidly, with a 60% drop by 2035 needed to limit global warming to 1.5C.
But for developing economies especially, the multi-billion-dollar costs associated with transitioning to greener energy systems and curbing their emissions are still a major barrier. Climate experts say governments and businesses need to move in step if NDC targets are to be achieved.
“There are positive actions going on but we need a significant ramping up. It’s not happening quickly enough,” said Briner. “It’s (about) building on these foundations that are being put in place.”
Nurturing the conditions for private investment
Last September, consumer goods giant Unilever published a report, entitled Bold Plans, Real Impact, examining how corporate climate transition plans and NDCs can support each other.
Among its recommendations, the report called for governments to provide clearer roadmaps for private-sector engagement. It also highlighted the need for stronger regulatory frameworks, market incentives, sector-specific transition pathways and integrated, economy-wide planning.
For businesses, the report recommended aligning their transition plans with national climate priorities, collaborating more closely with industry peers, strengthening monitoring and verification systems, and unlocking finance through public-private partnerships.
Comment: The missing piece in COP climate talks – market signals for adaptation
A year earlier, the We Mean Business Coalition published a similar report, Time to Deliver: Business Call to Action for Ambitious and Investible NDCs.
This report urged governments – particularly in the G20 economies – to unlock private investment through sectoral targets, clean energy expansion, energy efficiency measures, fossil fuel phase-outs and commitments to halt deforestation.
It also stressed the importance of translating climate targets into concrete policies, backed by national implementation strategies and coordination across ministries.
Another key recommendation was the need for more transparent and inclusive dialogue with businesses throughout the NDC process. Early consultation with companies, the report said, should be embedded into the development and implementation of NDCs to ensure that climate plans reflect commercial realities.
Briner of We Mean Business said the economics of decarbonisation have changed dramatically over the past two decades.
“Ten to 20 years ago, decarbonising and investing in clean energy and electrification was seen as nice-to-have and a more expensive option, but these days, it simply makes business sense,” he said, referring to recent geopolitical events in the Middle East that have roiled oil and gas markets, pushing up fossil fuel prices.
However, upfront costs for clean energy infrastructure remain a major hurdle. Governments therefore need to complement climate policies with investments, concessional loans, grants, subsidies and tax incentives to help reduce risks, Briner added.
“Globally, there are still significant subsidies going to fossil fuels in different forms,” he said. “If we could redirect some of those current incentives away from fossil fuels and into clean electrification and clean energy, then that would certainly help.”
Brazil’s sector-specific climate planning
Brazil’s NDC targets include expanding renewable energy – which already accounts for nearly 45% of its energy mix – ending illegal deforestation and reaching net-zero emissions by 2050.
According to Briner, Brazil’s climate strategy – known as Plano Clima – offers an example of how governments can provide businesses with clearer implementation guidance.
Years in development, the initiative sets out how Brazil intends to meet its climate goals through a series of sectoral plans covering areas such as energy, transport and land use.
“They’ve put together some pretty detailed, impressive plans,” Briner said. “Those are the types of things that will influence business models and business decisions. It’s this more detailed second layer of setting out national plans which is of interest to business.”


Last year, a transport coalition of more than 50 associations, companies and academia put forward a plan to help reduce the sector’s emissions and attract more than $600 billion in green investments in Brazil.
The previous year, 55 companies operating in Brazil, including Natura, Nestle, Itau and Unilever, called for more ambitious NDCs and clearer implementation policies, as well as encouraging climate-friendly investment and private-sector involvement.
Unilever, for example, has a global goal to create a deforestation-free supply chain and is partnering with a leading supplier in Brazil to ensure that soybean oil used at its factory there is not linked to forest loss.
Cheaper capital, high-quality projects
Although Brazil has relatively sophisticated capital markets, high interest rates still make long-term, low-carbon investments difficult, said Natalie Unterstell, president of the Talanoa Institute, a Brazilian environmental think-tank.
To address this challenge, Brazil is scaling up Fundo Clima – its National Climate Change Fund – as a central part of its implementation strategy by offering cheaper financing at scale.
But Unterstell said the private sector also needs to demonstrate that it can develop and deliver high-quality, low-carbon projects.
“Making Brazil’s policies investable is about making sure cheaper capital meets a pipeline of real, high-quality projects,” she said by email.
Brazilian firm behind SAF plan found growing oil palm on deforested Amazon land
While many companies have announced climate commitments, investment decisions have not always followed, she added.
“What companies can do better is move from targets to investment: adopt robust transition plans, and integrate carbon risk into core financial decisions,” Unterstell said.
On the government side, the priority is to “fix the signals”, she added. That means ensuring Brazil’s regulated carbon market – which is due to start in 2027 for sectors including iron and steel, cement, and oil and gas – operates with clear rules, credible enforcement and no delays, while aligning public finance with climate goals and providing long-term policy certainty.
“At the moment, both sides are waiting for stronger signals from the other, hence breaking that co-ordination problem is key,” she said.
Indonesia’s challenge: bridging the finance gap
Like Brazil, Indonesia is home to large areas of rainforest, but its energy mix relies far more heavily on fossil fuels, with coal providing about a third of supply. In its NDCs, Indonesia has pledged to reduce emissions by 31.9% by 2030 compared with business-as-usual levels, or by 43.2% with international support, on the way to reaching net zero by 2060.
Yet despite being promised more than $20 billion in international financial support from donor governments and investors under its Just Energy Transition Partnership, Jakarta has decided to row back on a plan to close a key coal power station early, saying it will focus on shuttering older and dirtier plants first.
To attract private investment to help achieve its emissions goals, Indonesia must provide policy clarity and long-term certainty, said Fabby Tumiwa, executive director of the Institute for Essential Services Reform, an Indonesian think-tank.
Comment: Indonesia’s failing Just Energy Transition Partnership is a cautionary tale
“Any investor wants to understand the long-term risks of the country so that they can assess the risks properly and come up with a risk mitigation strategy. Uncertain policies basically make investors unable to mitigate the risks,” Tumiwa told Climate Home News.
“To make Indonesia’s climate policies investable for the private sector, the core task is to convert climate ambition into bankable, enforceable, risk-adjusted projects,” he said. “Investors do not only need targets; they need predictable revenue, credible off-takers, permits, grid access, currency-risk management and policy durability.”
Indonesia has estimated the investment needed to meet its NDC goals at more than $400 billion but has yet to clearly outline how businesses can directly contribute, said Egi Suarga, senior manager for climate at World Resources Institute Indonesia, a research organisation.
He said climate action should be framed as an investment opportunity rather than an economic burden.
Evolving policies and regulations
Over 100 Indonesian companies have adopted net-zero and are ready to ramp up decarbonisation given clear national guidance, according to the We Mean Business Coalition.
Indonesia’s Indika Energy is making heavy investments in renewable energy such as solar, while cement company Solusi Bangun Indonesia is also investing in cleaner energy, fuel efficiency and pushing better biodiversity management.
Meanwhile, Unilever’s climate transition plan states that the company is working with local government and environmental NGOs in Indonesia to protect and restore forests in Aceh and North Sumatra. It is also switching from natural gas to biomethane at its Indonesian sites.


One positive development, Suarga noted, is the creation of carbon pricing regulations aimed at attracting private finance, with an initial focus on the forestry sector.
“It can create a good climate for investors,” he said. “It doesn’t directly mention that this is for achieving the NDCs but there is no trade-off between development financing with environmental protections – so that’s a good start.”
Indonesia also needs stronger incentives and regulations for renewable energy, he added.
“We also have to think about other sectors now – like the energy sector and renewables,” Suarga said. “How can the government provide more incentives or facilitating regulations that can be more profitable to create a level playing field for renewables and fossil fuels?”
Ambition loop to drive action
Like Tumiwa, Suarga stressed the need for greater dialogue between the government and businesses so companies can understand better how they can contribute to Indonesia’s emissions targets.
“They know about sustainability because of the market and demands of the market… [but] I’m not sure whether [they] really understand about Indonesia’s target to achieve a certain amount of emissions reductions in the NDCs,” he said.
Currently, the government and private sector are largely working separately, Suarga added. The challenge lies in bringing them together to set targets, plan implementation and monitor emissions reductions. “It will need two to tango. The government should engage more with the private sector,” he emphasised.
Big banks’ lending to coal backers undermines Indonesia’s green plans
For the We Mean Business Coalition’s Briner, what is ultimately needed is an “ambition loop” in which businesses lead on emissions reductions while governments create policies that accelerate private-sector action.
“It really helps governments when they have a strong voice from business calling for policy action. It helps move things forward,” he said.
Without stronger policies and incentives, achieving NDC goals will become increasingly difficult to achieve and costly, experts say.
“It’s really a case of all hands-on deck right now,” Briner said. “We need all sides of this equation working together and trying to get this done because there isn’t an alternative.”
The post Two to tango: How governments can unlock private investment for national climate goals appeared first on Climate Home News.
Two to tango: How governments can unlock private investment for national climate goals
Climate Change
How a Tiny Texas River Agency Plans to Build the Largest Desalination Plant in the Country
Officials from the Nueces River Authority collected millions of dollars from cities and utility districts near San Antonio and Austin before they partnered with an Israeli desalination giant.
This story was produced in partnership with the Texas Newsroom, the state’s network of public radio stations.
How a Tiny Texas River Agency Plans to Build the Largest Desalination Plant in the Country
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