This weekend marks 20 years since the Northridge earthquake shook up Southern California. The quake caused $20 billion in property damage -- making it one of the most expensive natural disasters in U.S. history. It also changed how researchers study earthquakes -- and how Los Angeles braces itself for the next Big One. From KCRW in Santa Monica, Avishay Artsy has more.
Lessons Learned 20 Years After the Northridge Earthquake
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