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| All Eyes on Keeling Curve: Scientists Anxious as CO2 Levels http://www.envirolink.org/forum/viewtopic.php?f=3&t=24247 |
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| Author: | Wayne Stollings [ Wed May 01, 2013 2:35 pm ] |
| Post subject: | All Eyes on Keeling Curve: Scientists Anxious as CO2 Levels |
http://insideclimatenews.org/news/20130 ... _237155367 All Eyes on Keeling Curve: Scientists Anxious as CO2 Levels to Cross 400 PPM For the first time in human history, concentrations of carbon dioxide in the atmosphere are expected to pass 400 parts per million across much of the Northern Hemisphere in May, according to scientists who study data from the Mauna Loa Observatory, the world's longest-running CO2 monitoring station. While crossing the 400 ppm mark isn't a "tipping point" that signals climate catastrophe, scientists told InsideClimate News, it is an important symbolic milestone that underscores government inaction on global warming. |
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