Q:How does CalTech determine the epicenter of an earthquake? — Nguyen Victor, TustinA:CalTech seismologists work backward from the time the shaking begins to discover the epicenter of an eart… ...

New Jersey experienced a 4.8 magnitude earthquake, according to the U.S. Geological Survey. Here is the science behind the cause and the Ramapo Fault.

New Jersey experienced a 4.8 magnitude earthquake, according to the U.S. Geological Survey. Here is the science behind the cause and the Ramapo Fault.

A newly found fault line with a rare slanted angle shows why an earthquake rattled New York City in April harder than its epicenter in New Jersey — and may be bigger seismic activity threat than ...