“Noctis Mons” is the seventh-largest volcano on Mars, the biggest being this one pictured—Olympus Mons (artist's impression). Scientists have discovered a massive, deeply eroded giant shield volcano ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...

Deep below the Earth's surface, magma is churning and flowing into the Axial Seamount, an underwater shield volcano about 300 miles off the coast of Oregon. As the volcano grows and tremors increase, ...