More Earth Day Photos

The Animals Of AntarcticaAntarctica is the most inhospitable place on Earth. Certain creatures survive there, though global warming can threaten their natural habitats.
The Ice Of AntarcticaAntarctica, the coldest place on Earth, is feeling the effects of global warming. See the view from the bottom of the Earth.
Our Country's National ParksNational Parks preserve some of America's most interesting and unique environments. Take a trip to these national treasures.

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Gettysburg Marks 150th Anniversary of Historic Civil War
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