Are men from Mars and women from Venus? What’s the role of biology in ‘boy toys’ and the separate ‘pink aisle’ for girls? Is there something natural about the continuing gender imbalance in power? Common assumptions are cut to shreds by Cordelia Fine. With Paul Barclay, she unpacks the cultural assumptions and gendered biases, the false claims made for biology, and replaces them with the real science of gender, hormones and human nature.