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A man was discovered trapped on a steep mountain ledge after hikers heard his screams for help in Sedona, Arizona, deputies ...

Using carbon dating, Montana State University researchers found the clutch of 30 whitebark pine trees were between 5,440 and ...

LAFD has provided a map of the areas affected. Two people were trapped, one seriously injured in an avalanche at Mammoth Mountain Friday morning during mitigation work following the powerful ...

A melting ice patch in the Rocky Mountains uncovered an ancient forest, and these trees have stories to tell about dynamic landscapes and climate change.

A hound dog tracking a mountain lion was trapped on a Colorado cliff face for about a day until rescuers could reach her, ...

A nearly 6,000-year-old forest is once again seeing daylight after millennia hidden under ice in the Rocky Mountains. A team of scientists from Montana State University, the U.S. Geological ...

Spencer Solomon National Park Service A hiker got stranded in a steep and rocky ravine in California ... But then he got trapped when the canyon became steep and unstable, park officials said.