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.
