South Bend, Ind., mayor and Democratic presidential candidate Pete Buttigieg compared the fight against climate change to such pivotal moments in American history as the American Revolution and the civil rights movement. "I actually think this is one of those moments that, like many moments in American history, really pivotal ones like maybe the American Revolution itself, the struggle for civil rights, it may be that of all the things we are doing right now, the thing we are going to be remembered for will boil down to where we were on this issue," Buttigieg said during MSNBC's climate forum...