Despite a decline in volcanic activity over the past two months, Spurr is at a yellow alert level, indicating that activity ...

Officials have detected a surge in earthquake activity at a massive US volcano, sparking fears of an imminent eruption.

A Virginia Tech study highlights the potential for a mega-tsunami triggered by a major earthquake in the Cascadia Subduction ...

The Hawaii volcano Kilauea lit up the skies with lava and ash, drawing tourists and raising safety alerts. Its eruption ...

Celebrate National Trails Day with some of the best hikes in the U.S.—from slot canyons to grassland wanders to secluded ...