Global warming to wreak havoc on U.S. crops and forests, report says

DENVER -- Climate change is increasing the risk of U.S. crop failures, depleting the nation's water resources and contributing to outbreaks of invasive species and insects, the Department of Agriculture said in a report released Tuesday. Those and other problems for the U.S. livestock and forestry industries will persist for at least the next 25 to 50 years, said the report compiled by 38 scientists for use by water and land managers. "I think what's really eye - opening is the depth and breadth of the impacts and consequences going on right now,"...