Deadliest volcanic eruption: The 1815 eruption of Mount Tambora in Indonesia, which killed up to 100,000 people From lava fountains to towering ash clouds, volcanoes produce some of the most dramatic ...

Some scientists think we can better understand volcanoes by learning how the gaseous vortexes emerge. By Carolyn Wilke Some volcanoes perform a rather subtle trick: blowing rings of vapor that waft ...

For decades, volcanologists believed that the primary trigger for explosive eruptions was a drop in pressure as magma rises ...

Scientists have uncovered a long-missing piece of the volcanic puzzle: rising magma doesn’t just form explosive gas bubbles ...

Scientists have discovered that shear forces inside rising magma can create gas bubbles long before pressure drops occur. The ...

A volcano in northern Ethiopia erupted Sunday, marking its first known eruption in 12,000 years. The volcano, called Hayli ...

The explosiveness of a volcanic eruption depends on how many gas bubbles form in the magma—and when. Until now, it was ...

A new study uncovers how volatile-rich magmas propel diamond-bearing kimberlites from Earth’s depths. If you’ve ever admired a diamond, chances are it originated from a kimberlite. More than 70% of ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. HONOLULU (AP) — One of the most active ...