A week after the judge declared a mistrial in the sexual assault trial of Bill Cosby, Bobby Allyn speaks to a juror. Host Dave Heller speaks to journalist David A. Lieb about how gerrymandering affected the 2016 election. Annette John-Hall answers the question posed by listener Alex Shirreffs of Philadelphia: Why is Pennsylvania called a commonwealth? Peter Crimmins talks to wildlife photographer by Michael Nichols who now has an exhibit open at the Philadelphia Museum of Art. On SkyTalk: an update on the hunt for new planets.