The Greenhouse Gas Bulletin was first published in 2004, when the annual CO2 level measured at WMO’s monitoring centers was 377.1 ppm. By 2024, this had risen to 423.9 ppm.

Our Earth is under a serious risk that could be harmful to life on Earth. In 2024, carbon dioxide (CO2) in the atmosphere reached its highest level on record. According to a new report from the World Meteorological Organization (WMO), the increase in CO2 may lead to sustained increases in Earth’s temperature. The report attributed the rise in CO2 emissions to ongoing emissions from human sources, increasing forest fires, and a decline in CO2 uptake by terrestrial ecosystems and the oceans.

What caused carbon dioxide levels to hit a record high?

Growth rates of CO2 have tripled since the 1960s, accelerating from an an

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