Learn more about the past eruptions at Yellowstone National Park and how each new eruption displaced evidence of the past.

Learn how geological clues preserved in ancient oceans link repeated volcanic eruptions to Triassic marine extinctions.

CC0 Usage Conditions ApplyClick for more information. Get a taste for some of the unique Smithsonian research and discoveries related to wonders big and small. Unwind at this virtual science café as ...

Mount Rainier’s quiet, snowcapped profile hides a restless interior that has just rattled itself with more than a thousand tiny earthquakes, a reminder that one of the country’s most dangerous ...