A famous curve of carbon dioxide levels is close to passing a milestone. Excerpt from: Milestone Nears on Curve Charting the Human Imprint on the Atmosphere ; ;Related ArticlesDot Earth Blog: Observed Earth: A New View of the SkyDot Earth Blog: Extreme Weather in a Warming World, and the American MindDot Earth Blog: A Google Duo and Media Maven Explore a Hyper-Connected Planet ;
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Milestone Nears on Curve Charting the Human Imprint on the Atmosphere