Carbon Dioxide Levels Grew at Record Pace in 2016by - November 2, 2017 CO2 concentrations hit 403.3 ppm last year, up from 400 ppm in 2015— Read more on ScientificAmerican.comSource: http://lslink.info/?c=24RR About The Day Nothing Changed Alonso set for 2018 Daytona...
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