Volcanoes are Earth’s geologic architects. They’ve created more than 80 percent of our planet’s surface, laying the foundation that has allowed life to thrive. Their explosive force crafts mountains ...

Video shows dangerously close footage of the very active Klyuchevskoy volcano in Siberia. A group of climbers braved the active volcano and captured mesmerizing video of a new cinder core. Cinder ...

A snowy cinder cone on Mount Lassen in Northern California, where University of Oregon researchers collected samples for their study on magma formation. They determined that the water cycle plays a ...

Volcanic cones are among the simplest volcano formations. They are built by fragments (called ejecta) thrown up (ejected) from a volcanic vent, piling up around the vent in the shape of a cone with a ...

What sets volcanoes apart from other mountains is the manner in which they form. Volcanic eruptions are fueled by heat released from magma, a mixture of molten rock, suspended minerals, and dissolved ...

Black cinder, at top, is highly porous small hard bits expelled by fountaining lava without much exposure to oxygen before cooling. Hawaii’s commercial supply of the material is nearing depletion ...

Video shows dangerously close footage of the very active Klyuchevskoy volcano in Siberia. A group of climbers braved the active volcano and captured mesmerizing video of a new cinder core. Cinder ...