The two new monuments -- the Chuckwalla and Sáttítla Highlands -- total nearly 850,000 acres, according to the administration.

An unknown volcano erupted so explosively in 1831 that it cooled Earth's climate. Now, nearly 200 years later, scientists ...

Some of the largest volcanic eruptions on the planet have occurred at Yellowstone National Park, and scientists have ...

The giant supervolcano that lies under Yellowstone National Park is cooling off in the west but staying hot in the northeast.

While giant glass balls are nice, these states decided to have some fun & do something unique to bring in the new year.

If you're an Xbox owner seeking to put your console through its paces, we've got you covered with a list of the best games around.

Supporters of the tours say they offer an exciting experience and allow older people and those with disabilities to see and enjoy the parks. Critics say the flights are an unnecessarily dangerous way ...

HONOLULU (AP) — One of the world’s most active volcanoes spewed lava into the air for a second straight day on Tuesday. The eruption of Kilauea volcano on Hawaii’s Big Island has stayed ...

KILAUEA, Hawaii (KHON) — Eruptive activity has resumed at Kīlauea, Hawaii’s most active volcano. The National Park Service reported “elevated earthquake activity” beneath Kīlauea’s summit at around 2 ...

The Kilauea volcano on Hawaii’s Big Island erupted early Monday morning as officials raised the volcano alert level to a ...

Hawaii's Kilauea volcano began erupting early Monday morning, with a webcam capturing lava gushing to the surface. The US Geological Survey (USGS) issued a 'code red' at 7:41am ET after detecting ...

One of the world's most active volcanoes sprang into life again Monday, spewing columns of lava 80 meters (260 feet) above Hawaii, US vulcanologists said. Images showed enormous fissures in the ...