Carbon dioxide benchmark hits new heights, worries scientists - 1 views
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Ryan Trevino on 21 Mar 14"Instruments on Hawaii's Mauna Loa observatory first recorded carbon dioxide levels above 400 parts per million last May, peaking at 400.5. This year, the seasonally fluctuating number has crossed 401 ppm three times this month and hit a record 401.6 on March 12, said Ralph Keeling at the Scripps Institution of Oceanography in San Diego. That's a figure well above pre-industrial levels and perhaps not seen since before the rise of humanity." -
Michael Kozuch on 22 Mar 14Yikes.