The concentration of carbon dioxide in the atmosphere is at its highest point in 800,000 years, according to UN research that found 2024 was likely to have been the hottest year on record and the first to surpass 1.5C above pre-industrial levels.
In an annual assessment of the climate, the UN’s World Meteorological Organization said signs of human-induced climate change “reached new heights” last year, with record greenhouse gas levels — combined with the El Niño weather phenomenon and other factors — causing record heat.
“Our planet is issuing more distress signals,” said UN secretary-general António Guterres, urging world leaders to step up climate action.
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