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Environment Stats: compare key data on Antarctica & United States

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  • Current issues: This entry lists the most pressing and important environmental problems. The following terms and abbreviations are used throughout the entry:
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STAT Antarctica United States HISTORY
Current issues in 1998, NASA satellite data showed that the Antarctic ozone hole was the largest on record, covering 27 million square kilometers; researchers in 1997 found that increased ultraviolet light passing through the hole damages the DNA of icefish, an Antarctic fish lacking hemoglobin; ozone depletion earlier was shown to harm one-celled Antarctic marine plants; in 2002, significant areas of ice shelves disintegrated in response to regional warming air pollution resulting in acid rain in both the US and Canada; the US is the largest single emitter of carbon dioxide from the burning of fossil fuels; water pollution from runoff of pesticides and fertilizers; limited natural fresh water resources in much of the western part of the country require careful management; desertification

SOURCES: CIA World Factbooks 18 December 2003 to 28 March 2011

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