A bison encounter at Yellowstone left a 12-year-old hospitalized, raising urgent questions about just how dangerous these seemingly calm giants can be and whether most visitors are keeping a safe

In Italy, Mount Etna has reached its ninth consecutive day of volcanic activity, prompting flight cancelations.

Earth was once covered by a global magma ocean, which later cooled and crystallised – now traces of this primordial event have been found in magma from a young volcano in the Indian Ocean

Volcano Watch” is a weekly article and activity update written by US Geological Survey Hawaiian Volcano Observatory scientists and affiliates. Bruce Houghton uses an 8K high-speed camera operating at 120 frames per second from Kīlauea Overlook in Hawaiʻi Volcanoes National Park to document Episode 28 of Kīlauea’s ongoing episodic summit eruption.

Volcanologist Martin Mangler explains how volcanic eruptions work to push lava into the air. Listen on the The Conversation’s Curious Kids podcast.

Flight disruption is now set to last at least until Tuesday morning.

Volcano Watch is a weekly article and activity update written by US Geological Survey Hawaiian Volcano Observatory scientists and affiliates. Hawaiʻi, the 50th state, reached a golden anniversary last Saturday,

A person standing on the largest volcano in the solar system would never know it. Olympus Mons rises 70,000 feet over Mars on slopes too gentle to notice, and its summit pokes above most of the planet's atmosphere.