Steve Levitt has spent decades as an academic economist, “studying strange phenomena and human behavior in weird circumstances.” Now he’s turning his curiosity to something new: interviewing some of the most interesting, unorthodox people around — from actresses to athletes, authors to inventors. Here is a preview of Levitt’s new podcast, which premieres August 21st.  New episodes every two weeks. People I (Mostly) Admire is a production of the Freakonomics Radio Network.