Though scientists believed volcanoes on the Moon to be long dead, a recent discovery suggests they were active as recently as 800 million years ago, which is fairly recent in geological time. Even ...

Add Yahoo as a preferred source to see more of our stories on Google. Far beneath the Earth's surface, a fiery world of viscous molten rock exists below the continental and oceanic plates, perpetually ...

Scientists have determined that ash can turn back into lava miles away from a supervolcano eruption due to reheating by a process called "viscous heating." Supervolcanoes, such as the one sitting ...

Lava domes form at the top of many volcanoes when viscous lava erupts. When they become unstable, they can collapse and cause a hazard. An international team of researchers has analysed summit dome ...

Ash from supervolcanoes dwarfing any volcanoes on Earth today could have been so hot that it turned back into lava once it hit the ground miles from an eruption, new research suggests. Subscribe to ...

A YouTube video showing a man taking five steps up a flow of lava on Mount Etna in Sicily has been analysed by a geoscientist who has confirmed it IS possible to walk on lava. Erik Klemetti, from ...