The Navajo residents of Page, Ariz., have gotten to the point where they openly worry their modest rush hour may end altogether. The rush hour consists of only a few hundred cars carrying 520 people out to the Navajo Generating Station (NGS), heading down a windy road to the coal-fired power plant, which is dramatically positioned on a ridge a mile from the shores of Lake Powell, the second largest man-made reservoir in the United States. The Navajo coal plant’s lease is set to expire in 2019, pending complex negotiations aimed at extending operations until 2044. Environmental Protection Agency (EPA)...