Des Moines Register: Climate change could have a drastic and harmful effect on U.S. agriculture, forcing farmers and ranchers to alter where they grow crops and costing them millions of additional dollars needed to tackle weeds, pests and diseases that threaten their operations, a sweeping government report said Tuesday.
The U.S. Department of Agriculture analysis said that while crops and livestock have been able to adapt to changes in their surroundings for close to 150 years, the accelerating pace and intensity...