My thoughts are first for all the people in Colorado and elsewhere whose lives are devastated by this event. Whether climate change is involved or not, it is a human tragedy. Reading the commentary is interesting. I am dismayed that so many are willing to claim humans have NO impact on the planet, or that nature's cycles are, well just natural, so why consider our impact. Perhaps the deniers are content to do nothing and proudly underestimate the impact of 7 billion humans. Those who turn a blind's eye to the interdependence of all species and ignore our dependence on a healthy ecosystem forget that Nature has no special love for the human species. We may well be next on her list of species on the way to extinction.