The U.S. Geological Survey says it has detected an increase seismic activity around Kamaʻehuakanaloa. The underwater volcano ...

There are two main types of volcano - composite and shield. The two types of volcano form in different places and have very different characteristics. Ash released from shield volcanoes often ...

Massive fields of magma underneath ancient volcanoes spewed out carbon dioxide long after eruptions on the surface had ended, ...

The world's biggest active volcano spans approximately 2,000 square miles and ascends about 13,600 feet above sea level - and ...

Mount Etna in Sicily, Italy, is an example of a composite volcano. Shield volcanoes do not have such violent eruptions. These volcanoes tend to have gentle slopes and their runnier lava spreads ...

Olympus Mons, the largest volcano in the Solar System, is a colossal shield volcano located on Mars. Rising 21 kilometers ...

Kamaʻehuakanaloa is a shield volcano similar to the more notorious Kīlauea and Mauna Loa mountains on the Big Island. The underwater volcano rises about 10,200 feet above the ocean floor but ...

Olympus Mons, Mars' immense shield volcano, towers 21 kilometers above its surface, dwarfing Earth's Mount Everest. Covering an area akin to Italy, it ...