The liquid outer core is surrounded by the thick layer called the mantle. It’s mostly solid rock, not melted like lava. Over time, changes in heat and pressure make the solid rock slowly flow. It’s ...

Add Yahoo as a preferred source to see more of our stories on Google. But 80 percent of land is made by volcanic activity—and the only place where you can see that new land being made is at a volcano.

Scientists compare volcanic cones on Earth and Mars to explain how gas-rich magma forms scoria cones. Spacecraft observations and Earth analog sites provide evidence of similar eruptive processes.

In East Africa’s Afar Depression, one of the only places on Earth where three tectonic plates meet, scientists have found compelling new evidence that fresh lava from deep within the mantle is playing ...

In many ways, water seems opposite to lava; its role is to support life, not destroy it. Despite their surface-level differences, the two are more similar than we think. The solution to the geophysics ...

China has taken a new step in its long-term planning for lunar exploration with the completion of a "simulated moon underground space." "The underground volcanic lava pipes by the Jingbo Lake are the ...

A collapsed lava tube detected in 30-year-old radar data from Venus may be part of a much wider network of underground caves.

On June 11, the 1,000-plus-foot lava blasts of Kīlauea, one of the world’s most active volcanoes, nearly lured one visitor to his death. A 30-year-old Boston man fell 30 feet from a steep cliff after ...

A moon exploration simulation with robots was conducted in a Jingbo Lake volcanic lava cave in China. Research indicates that ...

For most of deep time, spreading ridges released more carbon than volcano chains, changing how we interpret Earth’s climate history.