If you were in Anchorage or Southcentral Alaska on November 30th, you definitely felt the big 7.0 magnitude earthquake. The earthquake was the largest to hit the region since the Good Friday earthquake in 1964. Jeff Landfield sat down with Rob Witter, a research geologist with the US Geological Survey, to talk about the science behind what happened. They discuss the recent quake, what kind it was, different kinds of earthquakes, the 1964 quake, and earthquakes in Alaska in general. If you have earthquake questions, like many of us did after the quake, this is a must listen.