Month: May 2013

We did not break 400 ppm after all, but does it matter?

The LA Times reports, “Carbon dioxide in atmosphere did not break 400 ppm at Hawaii site.”  They note: “The National Oceanic and Atmospheric Administration (NOAA) revised its May 9 reading at the Mauna Loa observatory in Hawaii, saying it remained fractions of a point below the level of 400 ppm, at 399.89.” The measurement stayed …

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Why 400+ PPM Matters – it’s not an environmental issue

So I for one am horrified at recent news of atmospheric CO2-e concentration reaching 400+ppm… Why? Climate Change is a serious problem. Not because it can harm the environment (though it will, and that does pain me) but because of the wicked uncertain predicaments we face. The bigger issue with uncertainty is the threat it poses …

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Carbon Dioxide Hits 400 PPM for the First Time in 800,000 Years

We have reached a new record. For the first time in 800,000 years the atmospheric levels of carbon dioxide have reach 400 parts per million. For 1000s of years, the atmosphere has remained under 300 ppm of carbon dioxide. We were around 315 ppm in 1960. The rate of growth continues to grow. Read more at: Scientific American: …

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