Where Volcanoes Are Born Most volcanoes form at the boundaries of Earth's tectonic plates, which are huge slabs of crust and ...

Everyone knows about Yellowstone and the Grand Canyon, but did you know the U.S. is home to over 130 national monuments just ...

For millions of years, volcanoes have been the most powerful force in nature. And for many in the West, the impact of ...

H awaii’s Kilauea volcano sent lava soaring 400 feet into the air last week, resuming an intermittent eruption that has been ...

Recent major volcanic eruptions in Indonesia and Ethiopia have sparked questions about increasing activity. However, experts state there's no evidence ...

Scientists have discovered that shear forces inside rising magma can create gas bubbles long before pressure drops occur. The intensity of a volcanic eruption is shaped by how many gas bubbles develop ...

Washington is renowned for its dramatic hiking experiences: alpine lakes framed by sky-high peaks, mossy forests, and panoramic views that show off the entire Pacific Coast. But while these bucket ...

In a new study, researchers show that gas bubbles can form in the rising magma not only due to a drop in pressure but also due to shear forces. If these gas bubbles grow in the volcanic vent early on ...

Curious about volcanoes you can actually visit without risking life and limb? Good news: the U.S. is packed with fascinating volcanic sites, from smoldering calderas to massive craters, all open to ...

A hazy cloud that emerged over the active volcano was the result of high winds rather than a new eruption. By Amy Graff and Soumya Karlamangla On the morning of May 18, 1980, the most destructive ...

That came after scientists received reports of a large plume rising above the volcano, which turned out to be volcanic ash from the 1980 Mount St. Helens eruption. “It kind of looks like a brownish ...