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Northridge Earthquake: 20th Anniversary in Photos

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Early warning

prototype earthquake early warning system

(Image credit: Caltech)

A prototype earthquake early warning system is being tested to provide up to a minute's advance notice of quakes in California.

Becky Oskin
Becky Oskin
Contributing Writer
Becky Oskin covers Earth science, climate change and space, as well as general science topics. Becky was a science reporter at Live Science and The Pasadena Star-News; she has freelanced for New Scientist and the American Institute of Physics. She earned a master's degree in geology from Caltech, a bachelor's degree from Washington State University, and a graduate certificate in science writing from the University of California, Santa Cruz.