Arizona Corporation Commission Chair Kevin Thompson is warning that calls to reopen the shuttered Cholla coal plant threaten to impose nearly $2 billion in costs on ratepayers, according to a ...

Institute of Groundwater Ecology, GSF-National Research Center for Environment and Health, Ingolstädter Landstrasse 1, D-85764 Neuherberg, Germany, and Department of Geology and Geophysics, University ...

The Cholla Cactus Garden, located about 12 miles south of the park's North Entrance, is home to one of the few stands of cholla cactus in the park. The short, quarter-mile Cholla Cactus Garden ...