At the Seismological Society of America's Annual Meeting, researchers posed a seemingly simple question: how wide are faults?

At least seven aftershocks were reported immediately after the initial earthquake, CBS News reports. The earthquake was ...

Sediment cores drawn from four lakes in Guatemala record the distinct direction that ground shaking traveled during a 1976 ...

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 ...