Hird outlines the social study of science and nature, specifically in relation to sex, sex differences, and sexuality. She argues how Western understandings of sex are based less upon understanding material sex differences than on a discourse that emphasizes sex dichotomy over sex diversity. She argues for a feminist engagement with scientific debate that embraces the diversity and complexity of nature. Topics: Making Sex, Making Sexual Difference * The Body of Sexual Difference * New Materialism, Nonlinear Biology, and the Superabundance of Diversity * The Nonlinear Evolution of Human Sex * Sex Diversity in Non-Human Animals * Sex Diversity in Human Animals * How to Have Sex Without Women or Men