RÉCIT - Un document que vient de présenter l’Agence américaine d’observation océanique et atmosphérique (NOAA) prévoit la fin ...

Mauna Loa is spewing sulfur dioxide and other volcanic gases. They form volcanic smog, or vog, when they mix with vapor, oxygen and dust in sunlight.

Mauna Loa is among the most closely watched volcanoes in the world. Yet significant questions remain about what influences when it erupts and when it quiets.

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

MAUNA KEA, Hawaii — Neither darkness nor rain deterred dozens of people from piling into cars and driving up a remote access road here Friday evening to witness the earth form in front of their ...

People will no longer be able to hike to the summit of the world's largest active volcano due to elevated seismic activity.

Mauna Loa’s volume is estimated to be at least 18,000 square miles (75,000 square kilometers), making it the world’s largest volcano when measured from the ocean floor to its summit.

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.

Volcanic gas: Mauna Loa is releasing volcanic gases, mostly sulfur dioxide. The gases are present in their highest concentrations in the immediate area around the summit crater or vents.

From a deep fracture in Mauna Loa’s dark terrain, the volcano’s magnificent eruption sends geyser-like fountains of lava spraying into the sky.

Volcanic gases rise from a Kilauea fissure in Leilani Estates, as the moon rises on Hawaii's Big Island on May 26, 2018, in Pahoa, Hawaii. Volcanic gas rising from the recent Mauna Loa eruption ...

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