As our scientists predicted, climate change has reached a dangerous new stage, threatening our now-mostly-comfortable lives. One spectacular example is the horrendous drought now encompassing most of the west, from Colorado, New México, Arizona, California, Oregon and Washington—all the way up to British Columbia, where the town of Lytton hit 121° F. In addition to the coming fires in these areas, many of the great rivers of the west—the Colorado, Snake, Klamath, Columbia, even the Rio Grande—have been and will continue to be diminished by decreasing snowpack coming off the western mountains.