TRUCKEE, Calif. – Investigations are ongoing into the deadly Feb. 17 avalanche near Perry Peak. The Sierra Avalanche Center (SAC) continues to release new details as their investigation unfolds.

Introduction Have you ever seen video footage of an avalanche or landslide rolling down a hill? Why is it that at one moment everything seems fine then suddenly the mountain begins to slump? This ...

Forecasting a snow avalanche takes more than measuring the angle of a mountain slope, researchers report in the July 11 Science. Whether an avalanche happens might also depend on how the snow cracks ...

This is the famous Bent Pyramid. The lower part of the pyramid has an angle of 54° and the upper part is at 43°. Why is it bent? Really, who knows. The two likely reasons are: Time or money (well ...