More than 90,000 people live in the zones that a Mount Rainier lahar, a fast-moving flow of water, mud and rock, could ...

About 500 years ago, a wall of mud and rock tore down the west side of Mount Rainier, rolled through the Puyallup River valley, and left a deposit that geologists still map today. That event, the ...

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 ...

Mt. Rainier has lost its status as a year-round ice-capped peak, according to a new survey that shows the iconic mountain is shrinking—and its summit has even shifted location. The study, published in ...

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 ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A video showing a white plume ominously moving over Mount Rainier on ...

For decades, cyclists have gathered before dawn in the shadow of Washington’s Mount Rainier to attempt something that borders on absurd: riding 150 miles around the massive volcano in a single day.