Lake Mead at 35% capacity marking an all-time low

A persistent drought in the American Southwest forced the Anasazi to abandon their towns a thousand years ago. Eventually, the precipitation returned. Hoover Dam in Nevada was built in 1931, "during an especially wet period for the West." But today Lake Mead, which powers Hoover Dam's generators, is at an all-time low after a drought of 22 years with no end in sight. — Read the rest