Sunday marks 45 years since Mount St. Helens erupted in Washington state. The deadly eruption happened shortly after 8:30 a.m ...

57 people died in the eruption, but the disaster gave scientists a way to develop monitoring tools, improving their ability ...

Michael Lienau, part of the first film crew documenting the aftermath of the Mount St. Helens, said the experience was a ...

According to the USGS, Mount St. Helens is the most active volcano in the lower 48 states and the most likely in the Cascades to erupt again.

On May 18, 1980, the United States experienced the deadliest and most destructive volcanic eruption in its history.

It was 45 years ago today when Mount St. Helens erupted, triggering the biggest landslide in Earth’s recorded history and creating an ash cloud that reached across the country. John Yang looks back at ...

Color photos shot in 1980 from the cockpit of a Cessna 150 reveal the magnitude of Mount St. Helens' ash and destruction amid ...

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

We dug into the archives for 'The Mountain Erupts,' a KING 5 documentary on the 1980 Mount St. Helens eruption.

On May 18, 1980, the Mount St. Helens volcano in Washington state erupted, leaving an estimated 57 people dead or missing. In ...

India made history by conducting its first nuclear test in the Pokhran desert of Rajasthan. Code-named ‘Smiling Buddha’ on ...