Ask Science Dude – The Science of Sex. Once again, Sinead and the Angry Hippie join forces to begin a two part gender discussion. Here in part one, Sinead explains the science of sex determination, while the Angry Hippie tries to catch on and sound half-way intelligent. Sinead shines, Rob, not so much. You can listen to the show via the player to your right or click the link to download the episode.