Cities in Asia and the United States emit the most heat-trapping gas that feeds climate change, with Shanghai the most polluting, according to new data that combines observations and artificial intelligence.

Prominent scientists and politicians are urging the United Nations to bar countries that oppose phasing out fossil fuels from hosting the UN climate conference. The appeal, in a letter published on Friday during the COP29 conference in Baku,

A group of former leaders and climate experts said the annual U.N. COP climate talks were no longer fit for purpose and needed to be reformed, publishing a critical open letter mid-way through what has so far been a fractious summit.

Former senior UN officials say climate talks ‘simply cannot deliver the change’ at the pace we need in open letter

At the United Nations climate talks in Baku, Azerbaijan, wars are top of mind for some leaders and activists who have converged to discuss ways to limit global warming.