Driving through the Wyoming sagebrush west of Cheyenne, the clouds of dust rising from the road give way to giant plumes of steam shooting into the warming sky.
This is the Jim Bridger power plant, one of the largest coal-fired power sources in the nation and an enormous emitter of carbon dioxide pollution. At the plant's edge there's a reservoir, lined with rocks and clumps of drying grass. The plant sucks up about 16 million gallons of water each day, using it to power more than million homes across six western states, all the way to Oregon.
