Observations show that warming of the climate is unequivocal. The global warming observed over the past 50 years is due primarily to human-induced emissions of heat-trapping gases. These emissions come mainly from the burning of fossil fuels (coal, oil, and gas), with additional contributions from the clearing of forests and agricultural activities."
Sunday, May 16, 2010
A New Chapter on Climate Change
President-elect Obama recorded a message for the Global Climate Summit, promising "a new chapter of American leadership on climate change." Learn more at Change.gov.
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