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Five good green ideas from the U.S. government

Oct. 16, 2009, 11:21 p.m.
A waterfall in a national park

Photo: Savannah Grandfather/Flickr

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The U.S. parks system

The roots of today's U.S. National Parks Service were planted by Abraham Lincoln, who signed an act of Congress in 1864. But the federal government wouldn't get around to organizing the National Parks Service until 1916.