Reuters: Warmer temperatures brought on by climate change could trim output of some U.S. crops like corn in coming decades, but increase yields from other crops like soybeans, government scientists said on Tuesday. U.S. corn output dips and rises from year-to-year but has risen overall as farmers use new seeds and fertilizers to maximize growth. But output of the corn crops grown today could fall as much as much as 5 percent in coming decades as expected higher temperatures brought on …