Shortly before 10 a.m. on July 23, 2024, a violent hydrothermal blast ripped through Biscuit Basin in Yellowstone, hurling mud and steam into a towering plume estimated at 400 to 600 feet high. The ...

Sky 4 showed mud and debris covering Lincoln Road near Tyler Road in Penn Hills, Allegheny County.

The bulge first appeared in 1996 and has now returned, but Yellowstone Volcano Observatory says there's no cause for alarm.

Scientists have identified massive geological formations that are far more dangerous than Yellowstone — and they’re already active beneath Earth’s surface. These hidden systems store enormous pressure ...

HAWAII VOLCANOES NATIONAL PARK — When Scott and Pamela Rippel found out scientists were predicting a fountain of lava would erupt in Hawaii Volcanoes National Park on Jan. 24, they extended their ...

Scientists are monitoring a city of Chicago-sized swath of rising ground at the northern volcanic rim of the Yellowstone Caldera in Yellowstone National Park. Scientists say the area has risen an inch ...