The night sky at Chaco Canyon has long provided a top  star-gazing opportunity.  Flares from oil and gas rigs threaten to dim the celestial brilliance.

Drilling the Land of the Ancients

Oil and gas drilling on state lands within view of the Chaco Canyon visitor’s center continues to be a significant threat, according to the the New Mexico Wilderness Alliance.

The Elk Creek coal mine in Somerset, Colo., is owned by Bill Koch's Oxbow Energy. Koch supported the project and helped make it a reality.

How Aspen Skiing Co. became a power company

The strange, improbable deal united vastly different partners — one that mines black coal and another that sells holidays on white snow. The partners come from opposite ends of America’s political divide, but they agree it’s good to put an otherwise wasted resource to use.