Are Mount Rainier's "Muir Steps" a bit more shrouded in prominence and mystery than you may have imagined?

The U.S. Geological Survey counted 78,049 residents, or about 78,000 people, inside a modeled Mount Rainier mudflow zone that ...

Add Yahoo as a preferred source to see more of our stories on Google. Scientists have recorded the "largest" earthquake swarm at Mount Rainier in Washington state since 2009, the U.S. Geological ...

Add Yahoo as a preferred source to see more of our stories on Google. Mount Rainier fire crews spotted two new fire starts from Saturday's lightning storms while conducting aerial reconnaissance on ...

Mount Rainier is not getting ready to erupt, but scientists at the Pacific Northwest Seismic Network might blow their stacks over having to respond to a rumor about increased tremor activity at the ...

Our features editor took a deep dive into the cute and chunky critters to understand why the Internet has fallen for them. He learned six facts that every marmot fanatic should know. 3 Injured and 1 ...

Mount Rainier’s glaciers and snowfields feed a magnificent system of icy streams and mountain lakes. On the surface, these waters look pristine, scattered pools in one of America’s most iconic ...

Mount Rainier (Figure 2.1) is one of about two dozen recently active volcanoes in the Cascade Range, a volcanic arc formed by subduction of the Juan de Fuca plate beneath the North American plate.