If fracking leads to more frequent earthquakes, then why do some states that've experienced widespread fracking (like Oklahoma) have so many more earthquakes than do certain other states (like Ohio) that've also experienced widespread fracking? The answer might be in the "basement," so to speak. Our guest is Dr. Brett Carpenter, an Assistant Professor of Geology and Geophysics at The University of Oklahoma. He recently spoke here on the TU campus as part of Earth Science Week, which was presented by TU's Department of Geosciences. He spoke on "The Susceptibility of Oklahoma's Basement to Seismic Reactivation: Constraining the Necessary Ingredients for Induced Earthquakes."