Yellowstone is using a 53,000-pound vibrator truck to create custom-made earthquakes to study the supervolcano the park sits ...

Shasta Valley's strange hills reveal a secret — the debris of a massive ancient mountain collapse in Northern California.

We live in volcano country in the Pacific Northwest and a big anniversary is coming up later this month. Saturday, May 18 is ...

In the Pacific Northwest, Washington offers the most dramatic scenery. The best place to enjoy the outdoors is in a National ...

HONOLULU — Lava began bubbling out of Hawaii’s most active volcano once again on Tuesday as Kilauea’s sporadic eruption resumed. Watch the eruption in the player above. The eruption ...