Earth warmest in at least 400 years - 6/21/06

A panel convened by the National Research Council reached that conclusion in a broad review of scientific studies, reporting that the evidence indicates “recent warmth is unprecedented for at least the last 400 years.”

The National Research Council is part of the National Academies, a private organization chartered by Congress to advise the government on scientific matters.

Many scientists tie warming temperatures to rising emissions of certain gases such as carbon dioxide. While essential to survival, carbon dioxide has seen a big spike as fossil fuels are burned by cars and factories, leading to concerns that it and other gases are exacerbating the greenhouse effect that keeps Earth warm.

Learn more: http://www.climatecrisis.net/

New Source: http://www.msnbc.msn.com/id/13474997/

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