Unlike the Pacific Northwest’s steep-sloped Cascade volcanoes such as Mount St. Helens or Mount Hood that tend to explode ...

An undersea volcano off Oregon’s coast will likely erupt in 2025, scientists say. Known as Axial Seamount, it’s the most ...

Joe Biden has now protected more federal land and waters than any other president. President-elect Donald Trump said he will ...

Axial Seamount off Oregon's coast is the most active volcano in the Pacific Northwest, about 300 miles offshore and just ...

To be considered active, a volcano must have erupted at some point during the Holocene, but dormant and extinct are a little ...

The giant supervolcano that lies under Yellowstone National Park is cooling off in the west but staying hot in the northeast.

The caldera is the enormous volcanic crater left from the last time Yellowstone ... of material – 1,000 times larger than the Mount St. Helens eruption in Washington state in 1980.

16 x 20 in. (40.6 x 50.8 cm.) ...

Mount St. Helens, a composite volcano ... However, now that there's a deep crater from the 1980 eruption, the massive landslide and lateral blast that previously occurred are unlikely to happen ...