New research suggests that Earth’s orbital variations—the slow changes in its tilt, axial precession, and shape of its ...

If all the world’s volcanoes erupted at the same time, Earth would face an unprecedented catastrophe, triggering massive lava ...

Volcanologists at the Alaska Volcano Observatory have been monitoring volcanic unrest since April of last year.

Hidden in the stormy Furious Fifties, the South Sandwich Islands generate spectacular cloud formations. Winds sweeping past ...

Scientists discovered that volcanic eruptions in India’s Deccan Traps 66 million years ago released gases that altered ...

The Alaska Volcano Observatory said signs indicated a Mount Spurr eruption was likely, though not certain, in the weeks or ...

Scientists found that volcanic eruptions triggered short-lived oxygen spikes before Earth's air became breathable.

Mount Spurr, located about 75 miles West of Anchorage, has been acting up in recent weeks, prompting officials at the U.S. Geological Survey and Alaska Volcano Observatory to issue a yellow alert.

The increase in gas emissions confirms that new magma has intruded into the Earth’s crust beneath the volcano and indicates that an eruption is likely, but not certain, to occur within the next ...

It is widely believed that Earth’s atmosphere has been rich in oxygen for about 2.5 billion years due to a relatively rapid ...

For billions of years, the Earth's atmosphere was nothing like it ... A recent study suggests that volcanoes may have a much larger role in the process than previously thought.

A volcano near Alaska’s largest city is showing new signs of unrest, with experts saying the likelihood of an eruption at ...