The greenhouse effect was discovered more than 150 years ago and the first scientific paper linking carbon dioxide levels in ...

The Mauna Loa Observatory in Hawaii, which has been at the forefront of global climate monitoring since the 1950s, is facing ...

Mauna Loa spews lava for first time since 1984; ... As of 1:30 p.m. Monday, there was no more active lava within the caldera, and only the lowest-altitude of the three fissures was producing lava.

Mauna Loa, on the Big Island of Hawai'i, began spilling lava late on Sunday (Nov. 27) in its first eruption since 1984. Although most of the island's astronomy is perched atop the neighboring ...

The eruption of Hawaii’s Mauna Loa, the world’s largest active volcano, has interrupted a key site that monitors greenhouse gas concentrations in the atmosphere, officials said Tuesday. “The ...

NASA Odyssey orbiter snapped a first-ever image of a Mars volcano peeking above some clouds before dawn. It’s twice as tall as Earth’s largest volcano ...

Just 21 miles east of Mauna Loa, Kilauea’s ongoing eruption is now confined to a lake of lava rippling at its summit. But the history of this volcano is painful for Hawaii’s Big Island.

As Mauna Loa on the Big Island of Hawaii erupts, the hazards appear to be mostly under control, which is promising news for volcanologists, who have been waiting decades for an opportunity to ...

Scientists lower Mauna Loa alert level, say eruption could end soon. Scientists lowered the alert level for the Mauna Loa volcano on Hawaii's Big Island from a warning to a watch on Saturday and ...