A guide to the evolutionary biology of sex. Science documentary with songs(!) based on the book “Dr Tatiana's, Sex Advice to all Creation - The Definitive Guide to the Evolutionary Biology of Sex” written by the biologist Olivia Judson. and adapted for television. If sex is universal, why do species go about it in so many different ways? And what can humans learn from the mating habits of the creatures of the animal world? Sex is the engine of evolution - the drive to mix genes to produce the s...