In a groundbreaking discovery, Spanish researchers have unveiled a massive underwater mountain off the coast of Lanzarote, ...

Scientists are bracing for high lava fountains in the latest episode of an ongoing eruption of Hawaii’s Kilauea volcano.

Tucked away in southwest Florida, visitors can find an ancient warm spring — the only one of its kind in the state.

Videos posted on social media show a wide, grey plume billowing high into the air as startled residents look on ...