The East Coast Earthquake Discussed by NU Professor

I just wanted to share a segment from Chicago Tonight, a daily show on Chicago's local PBS station, WTTW. A professor I know from Northwestern University, Suzan van der Lee, was the guest who spoke about the recent magnitude 5.8 earthquake on the east coast. She does a very nice job of explaining some of the details about the geology of the east coast and how this event produced the strongest recorded tremor (at least on NU's seismometer) in Chicago over the past few years.