Mauna Loa is the world’s largest active volcano, said Trusdell, noting it extends 13,697 feet above sea level and about 3,100 feet below sea level. Its name meaning “long mountain” in Hawaiian.

Hawaii’s Mauna Loa Observatory just captured an ominous ... soil and water, and plants and animals, eventually making its way ...

scientists say Sara Hashemi Daily Correspondent The Mauna Loa Observatory in Hawaii recorded the highest annual jump in atmospheric carbon dioxide levels since its records began in 1958.

Mauna Loa, in Honolulu, Hawaii, 4,169 meters above sea level, is the most active volcano in the world. After 40 years of dormancy, it erupted Monday around midnight, the U.S. Geological Survey ...

“That’s good news for us,” Hawaii County Mayor Mitch Roth said. Still, county officials said they will stay on the alert--because scientists say things could always change. Lava from Mauna ...

With its beautiful beaches, rainforests, volcanic mountains, and lava deserts, the island of Hawaii is the perfect road trip ...