Photographer Peter McBride traveled along the Colorado River from its source high in the Rocky Mountains to its historic mouth at the Sea of Cortez. In this Yale Environment 360 video, he follows the natural course of the Colorado by raft, on foot, and overhead in a small plane, telling the story of a river whose water is siphoned off at every turn, leaving it high and dry 80 miles from the sea. In this video, McBride, a Colorado native, documents how increasing water demands have transformed the river that is the lifeblood for an arid Southwest.