US airlines are among those with the highest total emissions in 2024 that are subjected to CORSIA offsetting requirements, UN agency ICAO reported in newly published documents.

Trading on Indonesia’s carbon exchange jumped sharply in December, driven by a rise in negotiated transactions that lifted volumes to a 10-month high.

A Hong Kong-based carbon offset developer has signed two agreements with Senegal, covering a large-scale mangrove restoration programme and household biodigester deployment, according to an announcement Tuesday.

FPIC needed - Indonesia’s West Papua province said any expansion of palm oil plantations will require explicit approval from indigenous communities holding customary land rights, national news agency Antara reported. The provincial forestry office said governors will not issue recommendations or technical clearances without written consent from indigenous groups, citing the need to prevent social conflict and protect forests. Officials added that no new permits have been issued to clear forests for palm oil, with existing plantations limited to Manokwari, Teluk Bintuni, and Fakfak.

Hydrogen haul - Japan's Kawasaki Heavy Industries will build the world's largest liquefied hydrogen carrier with a capacity of 40,000 cubic metres, it said on Tuesday. The vessel will be constructed at Kawasaki’s Sakaide shipyard and will support a government-backed demonstration to commercialise a liquefied hydrogen supply chain by fiscal 2030. Kawasaki said the vessel builds on its earlier hydrogen shipping trials between Japan and Australia and is designed to underpin large-scale hydrogen trade expected in the next decade. In 2021, the company made the world’s first liquefied hydrogen carrier.

Water credits - Environmental services company Linkhola and Japan-based Earth and Water have launched Japan’s first carbon credit project based on water conservation, aiming to quantify GHG reductions from reduced water and hot-water use and converting them into tradable credits. The initiative will develop a dedicated methodology and issue voluntary carbon credits through Linkhola’s Earthstory platform. By calculating emissions reductions linked to lower energy use in water supply, sewage treatment, and water heating, the project seeks to visualise environmental value generated through everyday water-saving activities by companies, local governments, and other users, the companies said in a statement. The partners plan to finalise the methodology and issue the first credits by Mar. 2026, with an eye on scaling the approach to overseas markets, including ASEAN countries where demand for water is rising.

Caught in floodlight - Hundreds of hectares of protected, high-risk forest were cleared within land controlled by timber company PT Toba Pulp Lestari, upstream of Sumatran communities badly hit by flooding late last year, according to an investigation by NGOs Earthsight and Auriga Nusantara. The NGOs, using satellite imagery and field surveys, found protected forest and orangutan habitat were cleared on steep slopes within a part of the timber company’s concession. PT Toba Pulp Lestari sells wood pulp to make rayon, which is used to make clothes sold directly to the US and Europe, the NGOs said. Deforestation has been widely linked to the scale of the floods in Sumatra, where more than a 1,100 people have died so far. The case highlighted the role of international consumption in climate disasters, the NGOs said.

Microplastics are disrupting the world’s oceans’ ability to absorb and store CO2 as the ubiquitous fragments have found their way into the “biological carbon pump”, according to a recent academic research.

A government commissioned study has found that some 18 million hectares of CO2 sequestration projects would be required to achieve carbon abatement rates aligned with Australia's 2050 net zero emissions goal.

Greener conferences -  Thailand Convention and Exhibition Bureau has set a target to cut carbon emissions by 20,000 tCO2e by 2030, in a push to green the meetings and exhibitions sector, Travel Daily Media reported. The move follows a reduction of 2,446 tCO2e across 232 events in fiscal 2025, more than tripling the previous year’s cuts, according to the bureau. Event organisers will be required to plan carbon-neutral events and encouraged to use carbon credits from domestic mitigation projects, it added.

Walking a tightrope - Even as South Korea pledged to phase out coal power plants last year, trade talks with the US could see Seoul boosting imports of LNG under a broader deal to avert higher tariffs, Associated Press reported. Higher LNG purchases could lock South Korea into long-term fossil fuel dependence and undermine its climate goals if gas merely replaces coal rather than accelerating renewables. LNG currently accounts for nearly 20% of South Korea’s energy mix, with the government aiming to cut that share to about 10% by 2038, while renewables still supply just over 10% of power.

Low-carbon ammonia - Seoul-headquartered construction company Samsung E&A has begun manufacturing of the Wabash Low-Carbon Ammonia Project in the US, it announced. The project, to be built in Terre Haute, Indiana, will produce 500,000 tonnes of ammonia annually while capturing about 1.67 MtCO2e each year. Funded by the US Department of Energy and South Korean government ministries, the facility is being developed under a KRW 680 bln (about $475 mln) engineering, procurement, and fabrication contract signed with Wabash Valley Resources, with completion targeted for 2029. Samsung said it will apply its ammonia plant expertise and advanced technologies in partnership with US-based Honeywell UOP to deliver the project, which forms part of its broader push into low-carbon energy solutions.

Philippines’ Securities Exchange Commission (SEC) has introduced mandatory sustainability reporting requirements to large non-listed entities, according to a notice published late last month.

The growth of artificial intelligence, data centres, and electrification led to a rebound in climate venture capital investment in 2025, after declines in both 2023 and 2024, according to fresh data published on Tuesday.