In one of the most stark illustrations of how a changing climate can have regional effects, scientists have learned that winds over North America have done a complete 180 since the time of the last Ice Age several thousand years ago. Winter blizzards and spring thunderstorms today are usually fueled by moisture-laden winds blowing in from the West Coast. “In this study, we found evidence that during the last glacial period, about 14,000 to 36,000 years ago, the prevailing wind in this zone was easterly, and marine moisture came predominantly from the East Coast,” said lead study author Xiahong Feng...