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NOAA: Carbon Dioxide in Atmosphere Reaches Highest Level in Millions of Years

HeadlineJun 09, 2025

In climate news, the National Oceanic and Atmospheric Administration has revealed global carbon dioxide levels exceeded 430 parts per million last month. Researchers say this is the highest amount of CO2 in the Earth’s atmosphere in as many 30 million years — long before humans roamed the planet.

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