In California, where the next “Big One” is an always-looming threat, some lessons learned from the 1925 Santa Barbara quake ...

In California, where the next "Big One" is an always-looming threat, some lessons learned from the 1925 Santa Barbara quake ...

The Valdivia earthquake killed up to 6,000 people and sent tsunamis out across the Pacific Ocean. For comparison, researchers believe the new Chile megaquake hit with a magnitude of 9.5.