Yellowstone is home to the world’s largest-known hydrothermal explosions, including Mary Bay, Turbid Lake, and Elliott’s ...

A surprise eruption that shot steam, water and dark-colored rock and dirt dozens of feet into the sky Tuesday sent people running for safety in Yellowstone National Park. The hydrothermal explosion ...

Yellowstone’s Old Faithful is famous for its big eruptions, but how much water does it actually erupt? A new USGS study now has an answer.

If you’ve ever wondered how many bathtubs’ worth of water Old Faithful spews upwards on any given eruption, then you’re not alone. A team of researchers in Yellowstone National Park asked that very ...