At the top of the world, there is a sea—the remains of one, at least. The summit rocks of Mount Everest, the highest ...

But for busy people, here’s a summary of things you should know about what to do before, during and after an earthquake in Japan. If you’re on public transport: Follow the same guidelines ...

A volcano near Alaska's most populous city is showing signs it could be headed toward an eruption, officials said.

Mount Spurr, a towering snow-capped stratovolcano in Alaska, has long been a source of scientific intrigue, but recent events have sparked serious concerns. The Alaska Volcano Observatory (AVO) has ...