Volcanic 'avalanches' glide on air, boosting their deadly speed Pyroclastic flows are a leading cause of eruption-related deaths. Now, lab tests reveal the mind-bending reason they may rush down a ...

While Sheridan, Colorado is the most dangerous city in the state, the violent crime rate is less than that of Denver and ...

Thirty-five years ago this July, an avalanche killed forty-three climbers on a mountain called Lenin Peak. I witnessed the ...