The eruption of the Mauna Loa volcano in the US state of Hawaii prompted residents and tourists to visit the site to witness the rare scene. It is the world’s largest active volcano. After its ...

A magnitude 4.3 earthquake shook the southeastern flank of Mauna Loa late Sunday night, according to the U.S. Geological Survey.

Watch: World's largest volcano erupts for first time since 1984 The world's largest active volcano, Hawaii's Mauna Loa, has erupted for the first time in almost 40 years. The lava flow is mostly ...

Hawaii’s Mauna Loa Observatory just captured an ominous sign about the pace of global warming. Atmospheric levels of ...

Magma is on the move around the ring of fire. Massive Mauna Loa in Hawaii is rumbling, and now molten rock movement has been detected below Mt. Edgecumbe, a long dormant volcano in Alaska.

That happened two years ago with the world's largest active volcano. About two months before Mauna Loa spewed rivers of glowing orange molten lava, geologists detected small earthquakes nearby and ...

There are two active volcanoes in Hawai'i Volcanoes National Park, Mauna Loa and Kilauea, but Kilauea is the real "must-see." A 4,000-foot-tall mountain, Kilauea has been active since Jan. 3 ...