"Our attitudes to sex and sexuality are forever in flux. Driven by pleasure, power, revenge, a desire for children or simply because it isn't allowed, humans have had sex on the brain since pre-civilisation. But what do we really know? In The Story of Sex, we discover the truth, including: what eroticism really is, when the first couple was established, what phallic festivals were all about, when chastity belts were used and how some ancient civilisations were far ahead of their time when it came to gender equality."