On NPR's Science Friday: Jonathan Lyons for The Society for Useful Knowledge: How Benjamin Franklin and Friends Brought Enlightenment to America (Bloomsbury, 978-1608195534); Paul A. Offit for Do You Believe in Magic?: The Sense and Nonsense of Alternative Medicine (Harper, 978-0062222961); Victoria Maizes for Be Fruitful: The Essential Guide to Maximizing Fertliity and Giving (Scribner, 978-1451645477).