Friday - June 12, 2026
Annual Carbon Dioxide Peak Reaches 432 Parts per Million
June 11, 2026
LA JOLLA, California, June 11 -- The University of California San Diego campus posted the following news:

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Annual Carbon Dioxide Peak Reaches 432 Parts per Million

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Scientists at Scripps Institution of Oceanography at the University of California San Diego reported today that carbon dioxide levels at Mauna Loa Observatory reached 432.00 parts per million (ppm) in May, continuing a long trend of record-breaking annual peak readings.
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