The word volcano can conjure up different images in the mind. Sometimes it paints a picture of giant fields of lava spreading down a slope. Other times the word elicits thoughts of explosions and ...

Add Yahoo as a preferred source to see more of our stories on Google. A NASA spacecraft that has been circling Mars for more than two decades has spotted something it never has before in well over 100 ...

A dazzling image taken by NASA’s 2001 Mars Odyssey orbiter shows an unprecedented view of a 12-mile-high volcano poking through clouds at dawn on the Red Planet. Arsia Mons, which dwarfs Earth’s ...

Stephen Smith is a managing editor for CBSNews.com based in New York. A Washington, D.C. native, Steve was previously an editorial producer for the Washington Post, and has also worked in Los Angeles, ...

Young Mars would have been a staggering place to explore. The Red Planet was covered in flowing rivers of both water and lava. At the time, a series of four volcanoes — Olympus Mons and the three ...

A young underwater volcano near Mayotte has carried a chemical memory of Earth’s birth all the way to the seafloor. And it’s ...

Ancient volcanic eruptions may explain why Earth experienced 22 prolonged Holocene cold periods, according to a new climate study.

NASA scientists say the images provide far more than just a striking never-before-seen view of the Martian geography. Studying the features detailed in Odyssey's photos could help NASA prepare for ...