Indonesia's Anak Krakatau volcano erupted twice, sending volcanic ash across parts of western Indonesia and disrupting flights. Dramatic camera footage captured lava flares as ash clouds rose up to 50,

Anak Krakatau volcano eruption prompts cancellation of all flights at Jakarta’s Soekarno-Hatta International Airport

A volcano erupts and everything nearby disappears under rock, lava, and ash. So here’s the obvious question that occurs to almost everyone at some point. Why not just plug it? Fill the opening with concrete and stop the whole thing before it starts.

Mount Sinabung in Indonesia erupted this week and sent ash more than 11,000 feet into the air. While no one was injured, authorities say another, bigger eruption is possible

While earthquakes can strike unexpectedly at any time, eruptions are often preceded by signs of unrest. USGS Hawaiian Volcano Observatory scientists closely monitor active volcanoes in Hawaii for any signs of unrest and communicate via the USGS Volcano Alert Level and Aviation Color Code.