The state had already activated its emergency operations center and put National Guard on standby. Authorities urged children, the elderly,...

Five volcanoes, including Mauna Loa, make up the Big Island of Hawaii, the southernmost island in the Hawaiian archipelago.

The idea is to mimic Pinatubo by using a fleet of modified business jets to inject fine droplets of sulfuric acid into the stratosphere, wh...

Mars has acid fog which eats away rocks and is caused by volcanic eruptions on the red planet, a new study suggests.

Some aerial drones record and broadcast video while towing shovels on a tether; the shovels can drop down, open up, scoop up rock samples, ...