This is the greatest single threat to the planet --
No Planet B: The Global CO2cide 400 ppm Milestone
By Andrew Glikson
http://www.countercurrents.org/glikson030513.pdf
On
the 29 April, 2013, NOAA recorded a CO2 level of 399.50 ppm, signifying a return
to atmosphere conditions of the Pliocene (5.2 – 2.6 million years ago). This
followed a rise from 394.45 ppm to 397.34 ppm (March 2012 – 2013) at a rate of
2.89 ppm per year, unprecedented in the recorded geological history of the last
65 million years
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