Scientists have long wondered where the Kinnekulle tephra came from. It now appears this ancient giant was the source.

Scientists say it erupted with the force of several thousand hydrogen bombs but is extinct now.

Are we ready for a mega-blast from the supervolcano in Yellowstone National Park?

Lake Toba's eruption nearly wiped out humanity—here's why this supervolcano dwarfs Yellowstone and what happens if it blows ...

What if Yellowstone suddenly went from bubbling geysers and spectacular landscapes to the site of one of the largest volcanic ...

Deep beneath the scenic tourist hotspot of Yellowstone, scientists discovered something simultaneously cool and a little bit scary in the park’s legendary supervolcano. According to a study published ...

The Phlegraean Fields, a supervolcano located near Naples, Italy, with an appropriately majestic name, is showing some signs of life — which is not great for locals, as this particular supervolcano is ...

Ever been mesmerized by the swirling colors of Grand Prismatic Spring and wondered what fuels that otherworldly boil? It turns out that beneath the wild expanse of Yellowstone National Park lies one ...

The eruption occurred roughly 454.4 million years ago, predating the arrival of dinosaurs by over 200 million years.

Add Yahoo as a preferred source to see more of our stories on Google. Yellowstone averages between 1,500 and 2,500 earthquakes per year. In Yellowstone National Park, a bulge the size of 279 football ...

An ancient 'supervolcano' has been discovered beneath England's east coast with the strength of 'thousands of atomic bombs'.

“Even more colossal” is the way University of Utah researchers now describe the Yellowstone super volcano, which lies under the Wyoming’s northwest corner, after discovering that it is over twice as ...