This summer is the last one to swim or explore Crater Lake by boat until 2029. Here's what it's like to adventure at the ...

The Pacific Ring of Fire is a vast, horseshoe-shaped belt of intense geological activity that wraps around the Pacific Ocean.

The US Geological Survey has said that one of the most feared volcanos in the US has been shaking for three weeks and they ...

A massive volcano has shown critical signs that an eruption could be coming soon, but experts have said that there may be no way of telling when it'll blow.

Geophysics professor Jeffrey Johnson and geoscience postdoctoral research fellow Janine Andrys tackle three questions asked ...

The so-called earthquake swarm at Mount Rainier dwindled Friday but has surpassed the last large event at the volcano in 2009, the USGS said.

The U.S. Geological Survey said it and other agencies were monitoring the situation and would issue additional alerts "as ...