In this week's io9 show, we take a look at the shady side of science, and talk about some of our favorite scientist con artists. We discover how the "vaccines cause autism" hoax was perpetrated, and how inter-species cross-breeding among mice turned out to be a fake. But are online genetic testing services a scam, or can they really help you learn something useful? We talk to UC Berkeley biologist Gary Karpen to find out.

You can catch more episodes of the io9 Show on YouTube or Revision3. We're also on iTunes! Tune in every Friday for more startling revelations from the world to come!