The latest in the science of fertility, IVF and pregnancy... We find out how pre-implantation tests could improve the success of IVF and how stress during pregnancy affects foetal development. Plus, why knowledge is its own reward, how a jockey's posture makes horses run faster and how science publishing on the web is about to change. In Kitchen Science, Dave finds out how a bag of liquid cushions a developing baby inside it's mother! Like this podcast? Please help us by supporting the Naked Scientists