It’s taken two million years but we’ve done it! Finally, we’ve reached CO2 levels exceeding 400 parts per million everywhere on the planet, even the Arctic. The milestone was announced by the US National Oceanic and Atmospheric Administration (Noaa). They said it was the first month that the entire globe
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400 ppm
Of all the events that occurred during my blogging hiatus, the one that struck me as the most significant, even including the massive flooding of my hometown, was the Earth experiencing for the first time in millions of years an atmosphere containing 400 ppm carbon dioxide, as measured at the
Continue reading350 or bust: We’re All Passengers on The Titanic Now
* Dr. Richard Alley, climatologist, commenting on atmospheric CO2 levels passing an historic 400ppm last week.
Continue reading350 or bust: Politicians Fiddling While Planet Burns: Scientists Warn 400 PPM Milestone Ahead
From Citizens Climate Lobby Canada: MAY 1, 2013 – “For the first time in 3 million years [1], the average daily concentration of carbon dioxide in the atmosphere, as recorded at the Mauna Loa Observatory in Hawaii, is about to exceed 400 parts per million (PPM), a strong indication that
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