A supervolcano is located at Yellowstone National Park. Here's what happens to North America and the rest of the world if ...

The blue water spring is about 13 feet in diameter and 1 foot below the rim, USGS said. The water in the pool was measured at ...

More geological changes are occurring at Yellowstone National Park, as another hole forms in one of the park's basins.

While officials have said the hydrothermal explosion in Yellowstone earlier this month isn't a warning sign of impending doom, it's hard not to wonder what a 'supereruption' could look like.

Still, the explosion sparked conversation on the internet about what would happen if this were a sign of the “big one,” and what would happen if the volcanic system at Yellowstone were to erupt.

How would a large eruption at Yellowstone impact the US? According to the USGS, a “supereruption” at Yellowstone would have regional effects, including falling ash and short-term changes to ...

Example model output of possible ash distribution from a month-long Yellowstone supereruption. Results vary depending on wind and eruption conditions. Historical winds for January 2001 used here.