Scientists are sounding the alarm about a little-known threat at America's most dangerous volcano, which could turn catastrophic in just 30 minutes.
After Mount St. Helens erupted in 1980, experts were faced with a precarious question: How can we best prepare for when—not if—the next volcanic eruption in the Cascade Range occurs? Triggered by a ...
Experts fear that Mount Rainier could unleash deadly mudflows and flatten three nearby towns within minutes.