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SCIENCE STUDIO: Earthquakes

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  Keith talks with Thorne Lay, Distinguished Professor and Director of the Center for the Study of the Imaging & Dynamics of the Earth at the University of California Santa Cruz.  An El Paso High School graduate, Lay talks about his path towards a career in seismology.  He also explains the difference between P- and S-waves, and why nuclear testing during the Cold War led to advances in seismic technology.

Aired March 22, 2015.