Several park visitors reported feeling the temblor. While Yellowstone attracts millions of people every year who want to see the closest living relative of the buffalo, the bison, in its native ...

JACKSON, Wyo. (AP) — Until recently, Bob Smith had never witnessed two simultaneous earthquake swarms in his 53 years of monitoring seismic activity in and around the Yellowstone Caldera. Now, Smith, ...

YELLOWSTONE NATIONAL PARK, Wyo. (AP) - A swarm of more than 70 small earthquakes shook the ground near Old Faithful geyser earlier this month. The largest was a magnitude 2.4, barely enough to be felt ...