Fourteen years of drought are draining a key source of water for Los Angeles, Las Vegas and millions of hectares of U.S. farmland. Lake Mead supplies life-giving water to the arid Southwestern U.S. But the lake and the river that feeds it are stretched nearly to the limit. And experts are warning of an even drier future. In the first of a five-part series, VOA’s Steve Baragona looks at what the shrinking of a key reservoir means for cities and farms of the American Southwest.