The executive director of the Colorado Oil and Gas Association, Tisha Schuller, recently announced that she's leaving the state's largest trade鈥�

Opponents of hydraulic fracturing often comment on its high water use. Yet a comprehensive total of just how much water used during the process has been鈥�

Driven by new regulations and fracking, more coal power plants are retiring for cheaper, cleaner-burning natural gas. But scientists have yet to work out the fossil fuel's imperfect climate footprint.

As a result of Colorado's booming oil production, energy companies are paying more in severance taxes 鈥� money they pay the state for taking minerals out鈥�