Minneapolis Star Tribune: If last year's March warmth, June deluge, July heat and autumn drought didn't convince doubters that global climate change has come to Minnesota, last week brought fresh evidence for them to consider. The John Beargrease Sled Dog Marathon, canceled last year and in 2007 because of insufficient snow, faces the same problem this year and has been postponed. Organizers hope the race can be run in March. And three state House committees spent nearly two hours listening to five University of Minnesota...