Scientists study how nature cleans uranium from Colorado aquifer

Rifle, Colorado, is a small town on the Colorado River, in the heart of the Rocky Mountains, that's big on natural resources. It attracts hunters, fishermen, hikers, rock climbers. Its striking scenery attracted husband-and-wife ...

No increased danger after Yosemite rocks fall

A geological analysis Friday found there was no more danger than usual of another giant rock fall after two huge slides, including one involving a slab of granite the size of a 36-story building, occurred this week on the ...

US gov't moves to ban drones in 400 national parks (Update)

The U.S. National Park Service is taking steps to ban drones from 84 million acres (34 million hectares) of public lands and waterways, saying the unmanned aircraft annoy visitors, harass wildlife and threaten safety.

Climbers leave rare plants' genetic variation on the rocks

Rock climbers are having a negative impact on rare cliff-dwelling plants, ecologists have found. Writing in the British Ecological Society's Journal of Applied Ecology they say that in areas popular with climbers, conservation ...

DNA managed like climbing rope to avoid knots

A process that cells use to unravel knotted strands of DNA – resembling a method used to control climbing ropes – has been uncovered by scientists.