9 Droughts Dwarfed Dust Bowl in the Past 500 Years

Researchers at BYU collect tree ring data to understand climate historyDuring the past 500 years, nine droughts in the American West dwarfed the Dust Bowl of the 1930s, reports a new study, while extremely wet years flooded much of the Wasatch Front, the region where 80 percent of Utah’s population now lives. See full story on news.discovery.com