Reuters: The impact of climate change could uproot around six million people each year, half of them because of weather disasters like floods and storms, a top U.N. official said on Monday. The U.N. refugee agency (UNHCR) was making plans based on conservative estimates that global warming would force between 200 million and 250 million people from their homes by mid-century, said L. Craig Johnstone, the U.N. Deputy High Commissioner for Refugees. “That means a displacement of something …