| http://www.w3.org/ns/prov#value | - During a heat wave in what turns out to be the hottest year on record in the continental U.S., NASA climatologist Dr. James Hansen testifies that, ???The greenhouse effect has been detected and it is changing our climate now.??? The Intergovernmental Panel on Climate Change is established to investigate whether carbon dioxide and other gases are causing a warming of the global atmosphere and wheth
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