Earthquakes are rattling the Pacific from Alaska to California. Here's why the Ring of Fire is so active and what drives its frequent seismic activity.

A volcanic eruption in the Philippines forces mass evacuations, while another in Japan kills one person. Across the Pacific, a 7.9 magnitude earthquake hits off Alaska. So what’s the link? The spate ...

The Pacific's notorious 'Ring of Fire' has delivered another jolt amid a recent burst of seismic activity around the globe's most earthquake-prone region. A magnitude 5.5 earthquake struck roughly 140 ...

A new series of South Pacific earthquakes highlights a tectonic zone capable of generating devastating ocean-wide tsunamis.