A new study published in the Proceedings of the National Academy of Sciences shows that high elevation forests in Colorado and Southern Wyoming are experiencing bigger, more frequent and more severe wildfires than at any point in the past 2,000 years. According to the study, climate change has led to decreased snowfall and longer summers, triggering more wildfires. Bryan Shuman, a geology professor at the University of Wyoming and co-author of the paper, explained that the reduction in snowfall as compared to previous years is to blame.