Volcanoes are often judged by the size of their eruptions, but volcanologists measure danger ...

HONOLULU (AP) — Lava is shooting 100 feet to 200 feet (30 to 60 meters) into the air as Hawaii’s Mauna Loa, the world’s largest active volcano, erupts for the first time in nearly 40 years. For now, ...

My friend Melanie loves to watch the Discovery Channel and share what she has watched with others. The problem is she can never get the story straight. Her latest tale is about Yellowstone Park ...

Some of the world’s most beautiful wonders are also its most dangerous. From toxic lakes to active volcanoes, these places ...

The ground beneath us isn't as stable as we'd like to think. While we go about our daily lives, some of Earth's most remarkable geological features are quietly building pressure, preparing for ...

The explosiveness of a volcanic eruption depends on how many gas bubbles form in the magma—and when. Until now, it was thought that gas bubbles were formed primarily when the ambient pressure dropped ...

It's a truism among oceanographers that there is more accurate mapping of the surface of the moon and Mars than of the deep-ocean floor. That's especially true for the Bismarck Sea, a relatively deep ...

Scientists have uncovered a long-missing piece of the volcanic puzzle: rising magma doesn’t just form explosive gas bubbles when pressure drops—it can do so simply by being sheared and “kneaded” ...

A massive eruption 74,000 years ago shook the planet, and archaeologists are using volcanic glass to figure out how humans made it through. Reading time 5 minutes If you were lucky 74,000 years ago, ...