Ninety minutes: On average, that's the most you’ll need to wait to see Old Faithful, the most famous geyser in the world. Geysers are appreciated by many--just look at the crowds around OF--but ...

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Shaul Hurwitz, research hydrologist ...

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 ...