ScienceDaily: Richer nations with competitive crop production and few trade barriers would fare the best if climate change, weather events or other factors cause yields of grain and oilseed crops to become more volatile, a new study has found. By these criteria, the United States is poised to do well, but France would come out on top, according to the study of 21 countries conducted by economists at Oregon State University. “It’s important to know this because yields of most rain-fed grains …