Lava flows from the eruption of Hawaii's Mauna Loa, the world's largest active volcano, are moving toward a main highway, adding to local worries on an island with few major roadways. The U.S.

While the USGS scientists learned plenty about volcanism in El Salvador during this trip, it also provided key insights to ...

The US Coast Guard extended the required safety zone surrounding active lava flows in Hawaii after a flying hunk of lava hit a tour boat and injured 23 people. The so-called lava bomb punctured the ...

A dramatic "firehose" stream of molten lava continued to shoot out of a sea cliff Wednesday on Hawaii Island, splashing into the Pacific Ocean below and exploding upon impact. The massive Kilauea flow ...