Add Yahoo as a preferred source to see more of our stories on Google. When Mount St. Helens erupted on May 18, 1980, it caused enormous devastation. The eruption triggered mudslides, an explosion, and ...

Thirty years (and one day) ago, Mount St. Helens blew its top. Or rather, its side. After months of heightened seismic activity, a 5.1 magnitude earthquake caused the flank of the mountain to suddenly ...

It was a quiet Sunday morning, at 8:32 a.m., 38 years ago when Mount St. Helens blew its top, sending tons of ash into the sky. The volcano had been quiet since the 1850s, but in 1980, geologists were ...

Sunday marks the anniversary of the May 18, 1980, volcanic eruption that rocked the Northwest. Geologist Carolyn Driedger recounts the haunting day before that catastrophic event — and its lasting ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American I'm still going through the USGS image ...

The 1980 blast remains the deadliest volcanic eruption in U.S. history. More than 300 miles from the volcano, cities like Pullman, Washington, and Moscow, Idaho, were covered in ash. A 23-year-old ...

From the blast zone of Mount St. Helens to serene volcanic lakes, the Pacific Northwest is a playground for geology lovers. These landscapes tell stories of fiery pasts and resilient recoveries, ...

The story you're about to see is something truly special, because beneath the ash that fell from Mount St. Helens on May 18th, 1980, are clues to some mysteries that have never been fully solved. So ...