Another Year, Another ‘Record’ Greenhouse Gas Scare from UN’s WMO

Every October, right on schedule, the United Nations' World Meteorological Organization (WMO) rolls out its annual Greenhouse Gas Bulletin. And every October, the headline is the same: "Record!" This year's edition, the 22nd, landed on Oct. 27. It says carbon dioxide (CO2), methane, and nitrous oxide all hit new highs in 2025. Within hours, CBS News, New Scientist and a pile of other outlets were running it. The timing is no accident. WMO says outright that the bulletin is meant to inform negotiators at the COP31 climate confab in Antalya, Türkiye, which opened Nov. 9 and runs through Nov. 20. With the blabfest now in full swing, and with a fresh batch of global emissions numbers out this week, let's look at what the report actually says, and what the headlines left out.

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