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(7/8/2004, DENVER, CO.) Gothic, Colorado is home to the Rocky Mountain Biological Laboratory. As part of his climate-manipulation experiment, scientist John Harte has had heaters continuously warming a field there since January 1991. He says in the near furture, the wild flowers around Crested Butte could be pushed out by encroaching sagebrush as the area heats up from global warming. (Photo by Judy Walgren/ ROCKY MOUNTAIN NEWS)

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