The 45th anniversary of the catastrophic eruption of Mount St. Helens is on May 18. Here's what to know and when the volcano ...

The Mount St. Helens eruption anniversary prompts investigation into the California earthquakes: eruption history, threat ...

While the Grand Canyon is Flagstaff's easy-access claim to fame, this even quicker jaunt from the Arizona city offers ...

Mount St. Helens blew 45 years ago this week. A young grad with a camera watched the ash fall — and began to understand his calling.

Over the Sierra crest — about 150 miles to the east of Manteca, Oakdale, and Turlock — is one of the world’s largest active ...

Photo by Chris Leipelt via Unsplash It’s no secret that a super volcano lies miles beneath ... Yellowstone hasn’t had a significant eruption for about 70,000 years, when lava flows formed ...

image: Aerial view of Ontake Volcano, Honshū Island, Japan. Credit: Dr. Koshun Yamaoka view more Credit: Dr. Koshun Yamaoka For immediate release: Eruption Loading: New Approaches to Earthquake ...

They’re surprisingly resilient ecosystems.” In any volcanic eruption, magma rises from the depths of the Earth to the surface. The magma contains dissolved gases that form bubbles as the ...