Global CO2 Levels Hit Record High, Reports Say

Apr 6, 2021 | EARNINGS

For the first time in the history of measurements, the Mauna Loa Observatory (MLO) of the National Oceanic and Atmospheric Administration (NOAA), located on the north flank of Mauna Loa Volcano, on the Big Island of Hawaii recorded a concentration of carbon dioxide in the Earth’s atmosphere exceeding 421 parts per million.

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