Impacts David Von Drehle: The Little Colorado River canyon can survive only if we leave it alone A developer is pursuing a dreadful idea to build dams in the sacred canyonlands of the Little Colorado River.
Impacts www.nationalgeographic.com SLIDESHOW: 8 mighty rivers run dry from overuse From the American West to China, Australia to India, some of the world's most important rivers have been drained dry for agriculture, industry, and drinking water.
