Odd that considering one of the founders of Greenpeace, Dr. Patrick Moore, provided testimony to Congress regarding climate change stating:

"There is no scientific proof that human emissions of carbon dioxide (CO2) are the dominant cause of the minor warming of the Earth’s atmosphere over the past 100
years. If there were such a proof it would be written down for all to see. No actual proof, as it is understood in science, exists."

Read the whole thing:

http://www.epw.senate.gov/public/_ca...imonymoore.pdf