Countries agreed on a deal to inject at least $300 billion annually in humanity's fight against climate change, aimed at helping poor nations cope with the ravages of global warming at tense United Nations climate talks in the city where industry first tapped oil.

The petroleum-laden dust has settled on this year’s United Nations climate summit, COP29, held over the past fortnight in Baku, Azerbaijan. Climate scientists, leaders, lobbyists and delegates are heading for home.

The COP29 talks have laid bare the divisions between wealthy governments and developing nations reeling from the costs of storms, floods and droughts fueled by climate change.