Natural history programming is given a shot in the arm as extreme volcano hunter Chris Horsley climbs deep inside some of the world's most active volcanoes to gather new scientific data from the very ...

A giant volcano has been found in Mars’ Tharsis plateau, making it the fourth known volcano in the region. Heavily eroded, the 29,600-foot (9,022-meter) volcano has been hiding in plain sight, ...

A deeply eroded giant volcano, active from ancient through recent times and with possible remnants of glacier ice near its base, had been hiding near Mars' equator in plain sight. Its discovery points ...

“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 ...

Alaska officials are preparing to hold a lease sale for geothermal exploration rights at Augustine Volcano, a 4,133-foot peak that forms its own cone-shaped island in the southern part of Cook Inlet.