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In this latest episode of "TechKnow," contributor Kyle Hill visits California Institute of Technology's Seismological Laboratory to learn more about California's early earthquake warning system. The goal of early warning is to detect an earthquake, estimate the amount of ground shaking, and then issue a warning before the shaking starts.
Also in this episode, Lindsay Moran explores the latest technology in gun safety: smart guns. The gun works like a regular fire arm, except with a personalized touch to prevent it from ending up in the wrong hands.
Original Air Date: July 7, 2014