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 mountain glaciers, and it's changing the timing, temperature and amount of streamflow. Vegetation patterns have been altered, and wildfires have increased, enhancing flooding in some areas and creating drought in others. The impact on