New research offers clues as to why Mount St. Helens is one of the most explosive volcanoes in the Cascade range and why it stands apart from the chain of other Cascade volcanoes. Scientists from the ...

At the risk of this blog becoming all volcanoes, all the time, I bring you... more volcanoes! Two of my favorite geobloggers wrote mustn't-miss posts on some of our Cascades volcanoes. They showcase ...

After Cascades frogs vanished from Lassen Volcanic National Park 18years ago, scientists are reintroducing them to the park.

Mount Shasta, a steep-sided Cascade Range stratovolcano in Northern California, looms above Little Glass Mountain, a thick obsidian flow erupted from the Medicine Lake shield volcano about 1,000 years ...

SEATTLE — Mount St. Helens stood silent for over a century in Washington’s Cascade Range, but that all changed 45 years ago when the sleeping giant woke up and erupted into Pacific Northwest history.

Thirty-one years ago, John Ewert was a college graduate fascinated with Mount St. Helens. Today, he's the new scientist in charge of the U.S. Geological Survey's Cascades Volcano Observatory in ...

Tourists scrambled to get away from a volcanic eruption in Italy on June 2. Mount Etna, located on the eastern coast of Sicily and one of Europe's most active volcanoes, sent an ash cloud into the air ...

Oregon AG leads states in lawsuit against HHS's youth gender-affirming care declaration The declaration says HHS may exclude providers of gender-affirming care from participating in federal health ...

Earlier this month, Mount Rainier experienced its most powerful seismic swarm ever recorded by the U.S. Geological Survey. More than 1,000 earthquakes have been detected at the mountain since July 8 — ...

More than 300 earthquakes have erupted at Washington's Mount Rainier this week, the largest earthquake swarm at the volcano since 2009. As of Thursday, July 10, 334 earthquakes had been identified at ...

A "swarm" of earthquakes began at Mount Rainier in Washington in the early morning hours on Tuesday with hundreds of quakes detected so far, making it the largest such event at the volcano since 2009.