Guadalupe Maravilla draws on his home country of El Salvador as he sculpts backpacks and enlarged hands from volcanic rock.

Researchers believe dark rocks at the site of a future Mars rover landing mission may be left over from ancient volcanic ...

It’s like an instant holiday.” In partnership with Avis, the Sydney-based artist and Day Trip co-author shares her go-to ...

S nowflake obsidian is a form of volcanic glass that features white or grayish “snowflake” shapes made of embedded ...

The Moon, our ancient companion, might be older than we think. While lunar rocks suggest an age of 4.35 billion years, new ...

By studying prehistoric rocks and fossils emerging from the side of Mount Ashibetsu in Japan, researchers have precisely ...

In a volcanic lava field of Argentina sat a cryptic creature with “bulged” nostrils. Its patterned body blended in with the arid mountain landscape — but not well enough. Passing scientists noticed ...

To learn more about these rocks, the study authors mapped a region of 19,300 square miles (50,000 square kilometers) using data from the Context Camera on the Mars Reconnaissance Orbiter, a NASA ...

Since it's born out of molten rock, obsidian is only found in volcanic regions of the world, including in parts of the United States, such as the Mountain West, Southwest, California, Oregon ...