Star Tribune: Gov. Tim Pawlenty won’t speak out against a new coal-burning power plant on Minnesota’s western border, despite a request from one of the nation’s most prominent and controversial climate scientists. Dr. James Hansen, director of NASA’s Goddard Institute for Space Studies, cited Pawlenty’s leadership on greenhouse gas reduction in a letter this week that asked the governor to take a strong stand against construction of the proposed Big Stone II power plant in Milbank, …