Io is an incredibly active and extreme place, with glistening lava lakes and volcanic eruptions shooting sulfur and magma to ...

In Michigan's upper peninsula lies one of the world's oldest and largest lava flows. It's housed in a historic park, and it ...

Left: A close-up of a crack in the volcanic surface of a cooled lava flow from the crater of Mt. St. Helens.

As it pours down the volcano, the lava at the surface is cooled by the air and solidifies, creating an elastic, skinlike outer layer. Beneath this inflating membrane, the lava continues to ooze ...

Intrusive indicates that the magma was forced close to the surface, but then cooled more slowly underneath the surface. When lava erupts from a volcano, it can be as much as 10 times hotter than ...

Authorities have warned Hawaii residents to avoid lava streams that flow into the ocean, according to the publication. When mixed with cool sea water, the lava produces an acid steam called ...

The cave was supposedly formed about 960 years ago from hot lava that cooled to form a top layer, and then once the lava stopped flowing, it created a tube. Don't worry, there are no bats or ...

Tastes changed and the lava lamp craze cooled by the late 1970s. In 1989, when Granger met the then-septuagenarian Craven Walker at a nudist camp (both were clothed, at her request) to discuss her ...