April 18, 2021

Every observatory in the world now reports carbon dioxide is at highest level in 4 million years

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BY ANDREW FREEDMANFrom Mashable One by one, the observatories sounded the alarm in the past few years—from the peak of Mauna Loa in Hawaii, and the top of the Greenland ice sheet—as the amount of carbon dioxide in the Earth’s atmosphere crept above 400 parts per million (ppm). The last alarm bells went off this […]