Learn how ash from volcanic eruptions can alter ice content in clouds, influencing how Earth handles radiation.

Before a volcano erupts, rising magma squeezes out emissions of carbon dioxide visible from space, but trees might be a ...

When a volcano erupts, it can spew ash high into the atmosphere—inserting aerosols right where clouds typically form. How ...

Nearly a mile deep, the Pacific Ocean volcano known as Axial Seamount is drawing increasing scrutiny from scientists who only ...

The 1980 Mount St. Helens eruption began with a steady series of earthquakes in March. By April it began spewing smoke, ...

Prest and three other soldiers were skimming over a moonscape in a Huey helicopter, the same aircraft that was the Army’s ...

Explore how the landscape of southwest Washington still bears the scars of the Mount St. Helens eruption 45 years later, ...

Mount St. Helens erupted, killing dozens and forever changing how the US monitors earthquakes. The volcano is still active ...

Oxford researchers found that changes in shear-wave splitting can predict volcanic eruptions and their severity. The signal ...

The May 18, 1980, eruption of Mount St. Helens in southern Washington claimed 57 lives and blasted the terrain of old-growth ...

Stunning, historic front-page coverage from The Oregonian reporters Les Zaitz and Steve Jenning reports the confusion and ...

KING 5's Rich Marriott was working for the Northwest Avalanche Center when Mount St. Helens erupted. He was part of the team ...