The change measured by the Mauna Loa Observatory was likely driven by wildfires and continued burning of fossil fuels, ...

Hawaii's Mauna Loa, the world's largest active volcano, has started to erupt for the first time in nearly four decades, prompting volcanic ash and debris to fall nearby.

Axial Seamount is a young, 30 million-year-old undersea volcano in the Pacific Ocean off the U.S. coast, and it’s expected to ...

Storm Enzo clinched accumulating snow in all 50 states this winter, while also creating an upside-down snow total dichotomy ...

Officials at Hawaii Volcanoes National Park are bracing for crowds eager to get a glimpse of lava fountaining from an eruption ...

Hawaii’s Kilauea, one of the world’s most active volcanos, fired out partially molten “lava bombs” from its vents and lava fountains up to 262 feet.

Like fortune tellers who peer into a crystal ball for insight, volcanologists at the USGS Hawaiian Volcano Observatory peer ...

People gathered in awe at Hawai'i Volcanoes National Park on Wednesday to witness a spectacular eruption from Kilauea volcano ...

"The plume of volcanic gas and fine volcanic particles ... It is one of six active volcanoes in the Hawaiian Islands, which include Mauna Loa, the largest volcano in the world, though Kilauea ...

The most immediate threat was from volcanic smog that could reach homes ... of the world’s most active volcanoes: Kilauea and Mauna Loa. Kilauea also erupted in June and September.

"The plume of volcanic gas and fine volcanic particles ... which also include Mauna Loa, the largest volcano in the world. Kilauea is much smaller than neighboring Mauna Loa, but is far more ...