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May 3, 2018, 4:05 pm92 ptsTrendingGrist
The last time atmospheric carbon dioxide levels were this high, millions of years ago, the planet was very different. For one, humans didn’t exist. On Wednesday, scientists at the University of California in San Diego confirmed that April’s monthly average atmospheric carbon dioxide concentration breached…
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Leaf through planet Earths environmental headlines in one convenient place. Read, share and discover the latest on ecology, science and green living from the web's most popular sites.