So You Think It's Hot? Southwest to Sizzle for 90 Years

As the country sizzles from Phoenix to Las Vegas, scientists and environmentalists are saying, "I told you so." Although it's hard to judge long-term trends from individual seasons, a study co-written by researchers at Columbia and Princeton universities confirms that long-term drought is already under way in the American Southwest — one that may last the rest of this century, if not longer. These scientists attribute this new climatology in one of the fastest-growing regions of the United...Full Story