Changbaishan-Tianchi, known as Baekdu in Korean, could erupt again, so volcanologists want to understand the risks it poses. To investigate the catastrophic flood that followed the 946 eruption ...

Watch the eruption in the player above. The eruption that began Dec. 23 in a crater at the summit of Kilauea volcano has paused periodically. It resumed Wednesday morning as a “small sluggish ...