EcoWatch: Joining political rival Bernie Sanders in his long-held opposition and distancing herself from the reluctance of the Obama administration to reject the project outright, Democratic presidential frontrunner Hillary Clinton came out publicly against the Keystone XL tar sands pipeline for the first time on Tuesday. I think it is imperative, Clinton said during a campaign stop in Iowa, that we look at the Keystone pipeline as what I believe it isa distraction from important work we have to do on...