We handpick and explain the most important stories at the intersection of climate, land, food and nature over the past fortnight.

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

Key developments

Deforestation dropping, but not fast enough

LOSING FOREST: The world lost almost 11m hectares of forest each year over the past decade – an area almost the same size as Iceland, the UN Global Forest Resources Assessment found. The overall rate of deforestation slowed over 2015-25 – compared to annual losses of 13.6m hectares over 2000-15 and 17.6m hectares over 1990-2000. [Carbon Brief will publish an article later this week detailing more key findings.] Elsewhere, a different UN report found that annual spending on forests must more than triple to $300bn by 2030 to meet climate and nature goals.

POOR PROGRESS: At the same time, a third report found that more than 8m hectares of forest was destroyed in 2024 – which is 63% above the trajectory needed to put an end to deforestation by 2030. The Forest Declaration Assessment report said that countries are off track to meet a pledge from more than 100 countries to halt and reverse global deforestation by 2030. It noted that agriculture caused 86% of global deforestation in the past decade. In its coverage of the report, Climate Home News noted that experts said the findings were a “wake-up call” ahead of COP30 in the Amazon.

FOREST FINANCE: An investigation from Global Witness found that banks and asset managers around the world generated $26bn from “financing deforesting companies” through investments, loans and other financial services between 2016 and 2024. US financial institutions earned the biggest gains, it said. Elsewhere, the EU “u-turn[ed]” on plans to delay its anti-deforestation law until 2026, instead suggesting tweaks to allow more time for compliance, according to Politico. Separately, an NGO report found that timber imports from companies operating in the EU “can be traced to logging on Indonesia’s Borneo island”, Agence France-Presse said. 

Nature congress 

EXTINCTION RISK: A new global assessment published by the International Union for Conservation of Nature (IUCN) found that more than 60% of the world’s bird species are in decline, the Guardian reported. In 2016, the equivalent figure was 44%. The outlet underscored that deforestation, largely bolstered by the expansion of agriculture and human development, is the main cause of falling populations. The Washington Post added that Arctic mammals, such as seals, whales and polar bears, are also “increasingly threatened by extinction” due to pressures from climate change.

SIGNIFICANT IMPROVEMENT: The IUCN report also showed some “bright spot[s]”, as is the case with green sea turtles, which “have recovered substantially thanks to decades of conservation efforts”, explained the Washington Post. A scientist leading the sea turtle assessment told the New York Times that the rebound “comes down to reducing threats”. As another example of species recovery, the outlet pointed to the island of Rodrigues in the Indian Ocean, where two bird species on the brink of extinction are now listed as species of least concern, thanks to restoration work carried out by conservationists.

BIODIVERSITY CONGRESS: The report was published against the backdrop of this year’s IUCN congress on biodiversity conservation, which saw members adopt a 20-year strategic vision that boosts human rights and social justice alongside conservation, according to the IUCN. EFE Verde reported on the congress, where there was a call to action for countries to speed up the implementation of the Kunming-Montreal Global Biodiversity Framework and to ensure that 30% of the planet is protected by 2030. However, new analysis from Carbon Brief showed that just 28% of countries have submitted their plans for biodiversity conservation to the UN a year after the deadline.

News and views

WILDFIRE WATCH: The annual “state of wildfires” report found that extreme wildfires released more than 8bn tonnes of CO2 during the March 2024-February 2025 global fire season. The report, published by an international team of scientists and covered by Carbon Brief, showed that wildfires covered at least 3.7m square kilometres – an area larger than India – and exposed more than 100 million people around the world to these extremes.

BIOFUEL BOOST: At COP30, Brazil is expected to ask countries to quadruple their use of “sustainable fuels” over the next decade, including biofuels, biogas and hydrogen, as reported by the Guardian. A leaked document seen by the outlet revealed that Brazil argues biofuels will displace fossil fuels. However, biofuels – which are fuels derived from organic matter – are considered controversial by environmental experts, due to their potential to increase deforestation and promote monocultures, the outlet added. Separately, a new Carbon Brief Q&A explored how countries are using biofuels to meet their climate targets.

AGRIBUSINESS MOVE: Brazil’s agribusiness – the largest emitting-sector in the country and a major driver of deforestation – plans to present the country as a leader in sustainable agriculture at the upcoming COP30, Bloomberg reported. The farm lobby faces international pressure from policies such as the EU law that requires Brazil to ensure that its crop exports are free from deforestation, the outlet said.

LONG LIVE THE WHALES: A “historic lawsuit” to protect whales in the Gulf of California has been accepted for a hearing by two district courts in Mexico, Animal Político reported. The suit aims to declare the area a “critical habitat” and rule that previously granted permits for shipping liquefied natural gas through the gulf are unconstitutional. El País also covered the news and added that a coalition of civil-society organisations is advocating for the recognition of whales as “subjects of rights”.

LARGE EMISSIONS: In 2023, 45 major meat and dairy companies emitted more than 1bn tonnes of greenhouse gases, comparable to the emissions of top fossil-fuel producers, according to a new report by civil society organisations. The report found that the top five highest-emitting firms – JBS, Marfrig, Tyson, Minerva and Cargill – were responsible for 480m tonnes of CO2-equivalent emissions. The 45 firms’ methane emissions exceeded those from the EU and UK, it added. Elsewhere, Nestle withdrew from a global alliance of dairy producers for reducing methane emissions, without providing a reason, Reuters reported.

PRICE HIKE: Over the past year, extreme weather has driven up prices by 16% for five products – butter, beef, milk, coffee and chocolate – together responsible for 40% of food inflation over that time, according to research covered by the Daily Mail. The outlet said that “alternating periods of drought, extreme heat and heavy rainfall are affecting farmers” globally. The Financial Times also covered the report, writing that its “findings challenge the narrative promoted by industry groups that have linked high grocery bills to domestic policies”.

Spotlight

Researching climate impacts on Thai tree seeds

This week, Carbon Brief details how Kew Gardens researchers are studying the effects of extreme heat and drought on trees in Thailand. 

Forests in Thailand, as in many other parts of the world, are feeling the effects of climate change – from the country’s mountain peaks in the north to its mangroves on the southern coast. 

Scientists at Kew Gardens are assessing how certain tree species react to high temperatures and drought to help inform efforts in re-planting degraded forests across the country. 

The is one of several projects from Kew’s Millennium Seed Bank, which this week marks its 25th anniversary. It is the world’s largest collection of wild plant seeds, holding almost 2.5bn seeds from 40,000 different species.

Incubating seeds 

For the Thailand project, researchers collected 60,000 seeds from three tree species growing across the country. They focused on tree types which benefit local people, such as the Sapindus rarak, whose seed can be used as a washing detergent. 

The scientists sought seeds from areas with “different climates and altitudes” – ranging from the country’s highest mountain, Doi Inthanon, to its lowlands – to try to find out which areas yield resilient seeds, Dr Jan Sala, a researcher at the seed bank, told Carbon Brief. 

The Kew team is collaborating on the project with the Forest Reforestation Research Unit (Forru), a research team at Chiang Mai University in Thailand that restores degraded forests. 

The researchers are still analysing their data and hope to publish the findings next year, but Sala said initial observations show some “interesting” differences in how the thousands of tree seeds respond to warming and drought. He told Carbon Brief: 

“We cannot say this for sure because we have not finished the analysis, but hopefully we identify a couple of populations…that are resilient to climate change.” 

To study this, they put each of the thousands of seeds into incubators and subjected them to temperatures ranging from 5C to 50C across different periods of time. They wanted to see how the seeds germinate under various conditions and identify “whether a population or species reacts differently to temperature rising”, Sala says. 

Building resilient forests

Dr Inna Birchenko, a research associate at the Millennium Seed Bank who was also involved in the project, told Carbon Brief that the Thailand study findings can help to ensure that restored forest plots have the “best chance for long-term survival”.

She noted that resilient forests “contribute to decarbonisation by locking carbon in the trunks, as opposed to just being a wasteland or being an agricultural land”. 

Sala said the researchers hope to not only help Forru decide which seeds to use in different restoration projects, but also provide more information to “all practitioners across Thailand”. 

Birchenko noted that while temperate trees are generally well-researched, tropical species are “so understudied”. She told Carbon Brief: 

“Every day, I’m trying to find extra information about the genetics of this or that species, and there is absolutely nothing…So we are hoping that this potentially snowballs into more effort into this area.” 

Watch, read, listen

FLYING HIGH: A Guardian article visualised how bird migration around the world is being reshaped by “new threats”, including climate change. 

ON THE MOVE: Yale Environment 360 explored how US border-wall construction is “creating a roadblock” to the return of jaguars in the country’s south-west as Mexico’s populations recover.

OVERFISHING ISSUES: An article in Vox looked at how nature conservation projects in Madagascar could be reshaped to prevent them “mak[ing] it harder for desperately poor people to make a living”. 
VALUABLE VOCABULARY: An Atmos video addressed a study on how the English language is losing nature-related words, undermining people’s connection to nature.

New science

• China’s demand for Brazilian soya beans – used as animal feed – is driving agricultural expansion and deforestation in Brazil, with nearly 18m hectares of land in the South American country used to grow soya for export to China | Nature Food
• A review of climate adaptation practices among vegetable farmers in Africa found that most solutions focused on addressing drought, flooding and rainfall, primarily through technological solutions | Communications Earth and Environment
• Aboveground vegetation in Australian humid tropical forests has become a carbon source due to extreme temperatures and other climate anomalies, leading to higher rates of tree mortality and losses in biomass | Nature

In the diary

• 20-30 October: UN Convention on Biological Diversity subsidiary body meetings | Panama City
• 22-25 October: 43rd session of the European Forestry Commission | Istanbul, Turkey 
• 26 October:Argentina legislative election

Cropped is researched and written by Dr Giuliana Viglione, Aruna Chandrasekhar, Daisy Dunne, Orla Dwyer and Yanine Quiroz. Please send tips and feedback to cropped@carbonbrief.org

The post Cropped 22 October 2025: Global forest loss dips; Bird species in peril; Climate impact on Thai trees appeared first on Carbon Brief.