We Just Passed the Climate’s ‘Grim Milestone’

May 15, 2013 at 11:15 am Leave a comment

hawaii1

Over the last couple weeks, scientists and environmentalists have been keeping a particularly close eye on the Hawaii-based monitoring station that tracks how much carbon dioxide is in the atmosphere, as the count tiptoed closer to a record-smashing 400 parts per million. (On May 12th), we finally got there: The daily mean concentration was higher than at any time in human history, NOAA reported today. A monitor in Hawaii registered 400 parts per million of carbon dioxide in Earth’s atmosphere. HERE’s what that means.

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Entry filed under: Carbon_Emissions, Climate.

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