California has seven active volcanoes, each with a unique eruption history, categorized by type and threat level. The USGS monitors these volcanoes, providing information to authorities and the public ...

In the predawn darkness, a team of scientists climbs the slope of Mexico's Popocatépetl volcano, one of the world's most active and whose eruption could affect millions of people. Its mission: figure ...

Is there anything more spectacular than a towering lava fountain? Think about what it is: glowing red molten rock being shot into the sky, potentially hundreds or thousands of feet. As ubiquitous and ...

Winter weather alerts are in effect for a large portion of the Southeast. POPOCATÉPETL VOLCANO – In the predawn darkness, a team of scientists climbs the slope of Mexico's Popocatépetl volcano, one of ...

NASA scientists say the images provide far more than just a striking never-before-seen view of the Martian geography. Studying the features detailed in Odyssey's photos could help NASA prepare for ...

A new study has investigated the use of a new monitoring technique for early warning of a volcanic eruption. The research team compared the earthquake signals during two eruptions of Ontake Volcano in ...

Scientists have collaborated to analyze the inner workings of Bolivia's 'zombie' volcano, Uturuncu. By combining seismology, physics models and analysis of rock composition, researchers identify the ...

In the predawn darkness, a team of scientists climbs the slope of Mexico's Popocatépetl volcano, one of the world’s most active and whose eruption could affect millions of people. Its mission: figure ...