Making Babies

The latest in the science of fertility and In Vitro Fertilization feature in this week's Naked Scientists in Africa.& We find out how pre-implantation tests could improve the success of IVF and how a blood test could let you know if fertility treatment will be a success.& Plus, our multi-tasking ancestors, chimps can get AIDS, how algae get around and the secret of the Toucan's beak!