Trouble Spots From depleted forests to dying reefs, distress signals dot the globe. Even in the U.S., with its relatively clean environment, excessive carbon emissions fuel global warming
Carbon emissions The U.S. produces more greenhouse gasses than any other country--and by far the most per person
Deforestation Burning of forests to create cropland and unregulated timber harvesting have destroyed more than 15% of the Amazon in only 30 years
Antarctic warming Since 1945 the Antarctic Peninsula has experienced a warming of about 4.5[degrees]F (2.5[degrees]C). The annual melt season has increased by 2 to 3 weeks in just the past 20 years
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