CO2 at Record High concentration

Concentrations of the greenhouse gas carbon dioxide (CO2) in the global atmosphere has surpassed 400 ppm  for the first time in human history in April.
As on May 03, 2014 the value is still higher 401.80 ppm.

Read more from official website
http://keelingcurve.ucsd.edu/

 Here is the screen shot.
Courtesy: Scripps Institute of Oceanography
http://keelingcurve.ucsd.edu/

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