The recent fossil discovery of two new species of tetrapods in South Africa reveals that the evolution of fish to land animals could have taken place differently than previously thought. We hear from Dr. Robert Gess and Professor Per Ahlberg. In Unscience, hear how sleep paralysis and hallucinations affect student athletes. Later we speak to the scientist behind the science, Aviwe Matiwane, a paleobotanist and Ph.D. candidate at Rhodes University. wits.journalism.co.za