National Treasures #227 By Hank Silverberg The scenes from Yellowstone National Park in Montana are devastating. The record flooding from this past week has caused $29 million in damage to roads and buildings, and actually washed away chunks of the Gardner River bank. The damage will cost millions to repair and has ruined long, dreamed- about vacations for thousands. But there's more to it than that. (Damaged North Entrance to Yellowstone, Courtesy of NPS) Much of what happened damage-wise this past week in Montana is likely the result of climate change. The National Park Service warned us years ago that warmer temperatures are accelerating the melting of moun...