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May 16, 2019, 10:26 am205 ptsEcoWatch
By Andy Rowell Earlier this month, we collectively walked into the unknown. We are all now a living experiment. Never before in human history have carbon dioxide levels reached 415 parts per million. None These levels were last seen maybe some 2.5 to 5 million years ago, during the Pliocene, but then the earth…
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