A BNSF representative said employees have seen "unsafe trespass activity on its property in the area," prompting the installation of barriers and signs "in an attempt to eliminate the trespassing." ...

The incident marks the latest mishap to mar the deployment of the Truman, which has been essential in the airstrike campaign ...

Seismic wave measurements suggest the supervolcano beneath the popular national park is unlikely to erupt any time soon ...

Yellowstone supervolcano is monitored closely. Scientists explain eruption risks, magma movement, and chances of future volcanic activity. The post Yellowstone Supervolcano: Could It Erupt Again ...

Idaho State Police say a pickup truck that collided with a tour van near Yellowstone National Park last week, killing seven ...