Most people think they know California, but they’re missing the part that exists underground. Lava Beds National Monument in ...

Echinus Geyser in Yellowstone National Park, a rare acidic geyser and the largest in the world, has recently been observed ...

Whether this activity will persist through the summer months, allowing tourists to observe, remains uncertain.

Generally, states with large populations and wide-open skies reported the highest number of UFO sightings in the U.S.

The geyser really came alive in fall 2017. From October 18 to November 10, 2017, Echinus consistently erupted roughly about ...

The world's largest acidic geyser has begun erupting again in Yellowstone after slumbering for over five years, the national ...

A surge in sensors and cameras, combined with artificial intelligence, has transformed U.S. intelligence’s ability to locate ...

A minor, 3.4-magnitude earthquake struck in Central California on Monday, according to the United States Geological Survey.

The alert level for Mauna Loa is currently “normal”; we expect to see additional changes such as increased seismicity or gas emissions before any future eruption. Even during quiet times, keeping a ...

Albert’s article Volcanoes and rain explores the possible links between volcanic eruptions and subsequent periods of wet weather. But there is another side to this story: rain can, in turn, have ...

Social media videos showed people running into the streets as bright orange flames and smoke spewed into the sky.

One thing that makes the Lassen Peak Trail special is its accessibility within the context of Lassen Volcanic National Park.