National Climate Assessment Details Stronger Evidence Of Global Warming And Its Impacts

A federal committee has published a draft of the nation's third climate assessment report, a comprehensive analysis of the latest and best peer-reviewed science on the extent and impacts of global warming on the United States. None of the body's findings are entirely new, but the report suggests that evidence is now stronger and clearer than ever that the climate is rapidly changing -- primarily as a result of human activities, including the copious burning of fossil fuels. Observed weather extr...