Add Yahoo as a preferred source to see more of our stories on Google. When you think of the United States, images of sprawling cities and vast landscapes might come to mind, but not the hidden and ...

Structural changes take years to build, like subterranean pressure. For investors, doing nothing is not an option ...

More than a century has passed since the last eruptions of Lassen Peak and Mount Shasta, yet both remain active and are among the top two highest-threat volcanoes in California, according to the U.S.

This year, the Earth’s core put on a show unlike any other, with volcanic eruptions that dazzled observers from every continent. Some of these eruptions were so breathtaking they left viewers ...

Add Yahoo as a preferred source to see more of our stories on Google. A magnitude 4.6 earthquake shook Hawaii on Tuesday night, striking on the southern side of the Kilauea volcano, which has had ...