Though its last eruption was a century ago, California's Lassen Peak is the centerpiece of a volcanic panorama.

A snowcapped backdrop to Seattle and Puget Sound, Mount Rainier is a slumbering giant that last erupted in the 1890s.

The movement of the plates creates three types of tectonic boundaries: convergent, where plates move into one another; ...

Also known as the Circum-Pacific Belt, the Ring of Fire traces the meeting points of many tectonic plates, including the ...

Hawaii’s Kilauea volcano resumed erupting Friday by shooting an arc of lava 100 feet into the air and across a section of its ...

The start of the Triassic period (and the Mesozoic era) was a desolate time in Earth's history. Something—a bout of violent ...

Diamonds present at the birth of the Okavango Delta have a lasting connection to this landscape and are playing a unique role ...

Is there an eruption coming to Yellowstone National Park? While there is a volcano in Yellowstone, it may not erupt for a long time. The last one in the park area happened around 174,000 years ago.

There's been a lot of people wondering about a possible volcanic eruption at Yellowstone National Park. Let's talk about it.