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.

Tourists traveling by plane over Yellowstone National Park on Thursday were treated to a rare and magnificent view of the world’s tallest active geyser shooting steam 400-plus feet skyward. The ...

A major Yellowstone eruption likely won’t happen for thousands, and potentially millions, of years. Scientists say that the ...

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

YELLOWSTONE NATIONAL PARK, Wyo. — Yellowstone’s Echinus Geyser—the largest acidic geyser on Earth—is putting on a show with a rare and spectacular reawakening. Located in the Back Basin of the Norris ...

Tom has a master’s degree in biochemistry from the University of Oxford and his interests range from immunology and microscopy to the philosophy of science.View full profile Tom has a master’s degree ...

YELLOWSTONE NATIONAL PARK, Wyoming — It was the talk of the boardwalk. Everyone had heard that there was an unusually active geyser here in the Norris Geyser Basin, near the center of the park. A sign ...

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 ...