This photo was taken by a Hawaiian Volcano Observatory monitoring webcam just before 6 a.m. July 9, 2025, during Episode 28 ...

Scientists have downgraded the alert for Hawaii's Mauna Loa, the world's largest active volcano, from a warning to a watch as its current behavior suggests it may stop erupting soon.

Mauna Loa, the world’s largest volcano, is erupting. Here’s why and what will happen next.

Hawaii's Mauna Loa is the largest active volcano in the world. But how was it formed?

Mauna Loa Road in Hawaii Volcanoes National Park has reopened, and motorists, hikers and cyclists may again enjoy the historic roadway from Kipukapuaulu to the 6,667-foot Mauna Loa Lookout seven ...

The Mauna Loa observatory, which has been without power since the volcano erupted late last year. Mr. Colton retrieved the day’s air samples from Mauna Loa from a helicopter.

Elevated seismic activity has caused Hawai’i Volcanoes National Park to close the Mauna Loa summit backcountry until further notice, the park announced this week.

Hawaii's Mauna Loa continued to erupt on Tuesday, at one point spewing lava up to 200 feet into the air. The volcano last erupted nearly four decades ago.

A volcanic eruption in Hawaii has interrupted a key long-running scientific record of airborne carbon dioxide. Lava flows from one of the world’s largest volcanoes, Mauna Loa, have cut off ...

From Mount St Helens in Washington to the Mauna Loa in Hawaii, these structures have a complicated history of disaster and beauty.

Scientists can't know precisely when a volcano is about to erupt, but they can sometimes pick up telltale warning signs.