The Skeptics' Guide to the Universe - Skeptics Guide #211 – Aug 4 2009
Interview with Skepchick Carrie Iwan; News Items: Teeth from Stem Cells, Stem Cell Clinic Raid, Laser Propulsion, Update on Simon Singh; Your E-mails and Questions: Origin of Matter, 4-minute Interval Training; Science or Fiction; Who's That Noisy