David A. Johnston was killed just hours after his last ever picture was taken. The volcanologist from Chicago, US was once ...

This 2023 satellite photo shows the heart-shaped Spirit Lake, which was transformed by the cataclysmic eruption of Mount St.

When most of us think about active volcanoes in the U.S., Mount St. Helens, Mt. Rainier and a few others will first come to mind. However, one of the most active volcanoes in the region is about a ...