The Arizona Intake Towers at the Hoover Dam in Arizona. The white 'bathtub ring' on the rocks is from mineral deposits left by higher levels of water. A seven-year drought and increased water demand spurred by explosive population growth in the Southwest has caused the water level at Lake Mead, which supplies water to Las Vegas, Arizona and Southern California, to drop over 100 feet to its lowest level since the 1960s. (Photo by Ethan Miller/Getty Images)
Are water wars in our future?
Concerns about the global supply of fresh water are growing, leading some to warn of future conflicts over access to water. Already, some Canadians are concerned about their country exporting water to the United States.
Guests
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Peter Gleick: Pesident and co-founder of the Pacific Institute for Studies in Development, Environment, and Security.
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Maude Barlow: Chairperson of the Council of Canadians and co-author of "Blue Gold: The Fight to Stop Corporate Theft of the World's Water."
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