A bulldozer begins to tear down a section of the Santa Monica Freeway that collapsed during the Northridge earthquake, 25 years ago. Despite lessons learned from that earthquake, LA is far from prepared for the next big one.

A bulldozer begins to tear down a section of the Santa Monica Freeway that collapsed during the Northridge earthquake, 25 years ago. Despite lessons learned from that earthquake, LA is far from prepared for the next big one.