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Biggest climate warmers

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The United States, China, Russia, Brazil, India, Germany and the United Kingdom are responsible for more than 60 percent of the 0.74 degree Celsius rise in global average temperature observed from 1906 to 2005, a new report shows.

Nations add to warming through fossil fuel use, land-use change and other effects. In a cartogram (final slide, above), a nation’s size expands if its warming contribution is large for its geographic area and contracts if emissions are low per unit area.

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