Some volcanoes, such as the Cascade volcanoes up in Washington and Oregon, are of the type called a stratovolcano. These steep volcanoes sometimes erupt explosively and other times have calmer lava ...

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 ...

This Is the Way the World Ends? Volcanoes Could Darken World June 6, 2012 — -- Are you worried about the end of life as we know it? Then don't just look to the sky for that catastrophic asteroid ...

Few places on Earth demonstrate the raw power of geological activity like volcanoes. The dynamic processes beneath our planet's crust are the reasons behind (or rather, under) events like the July ...