Hill: The research, conducted mostly before nearly 200 nations voted last month in Paris on an international climate accord, found that Democrats (63 percent) are much more likely than Republicans (18 percent) to see climate change as a very serious issue. The poll provides another piece of support for actions internationally and by President Obama to fight climate change. Obamas main climate policy, contentious new limits on carbon emissions from power plants, is due to be litigated this year in federal...