Annual carbon dioxide peak passes another milestone

PHYSorg
Jun 5, 2025, 1:34 pm285 ptsTop
For the first time, the seasonal peak of carbon dioxide concentrations in the atmosphere exceeded 430 parts per million (ppm) at NOAA's Mauna Loa Observatory on Hawaii, scientists from NOAA and Scripps Institution of Oceanography at the University of California San Diego reported today.

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