| http://www.w3.org/ns/prov#value | - ts as well. (A related fact: The main heat-producing, greenhouse gas in our atmosphere is water vapor, not carbon dioxide or other gases produced by man.)u ???While CO2 has increased substantially [in recent decades], its [direct] effect on temperature has been so slight that it has not been experimentally detected.??? Arthur B. Robinson et al., ???Environmental Effects of Increased Atmospheric Ca
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