This text takes a sociological approach to the study of sexualities It examines sexuality as a social construction, and covers the emergence of sexual identities, intersectionality, historical and current inequalities and discrimination faced by sexual minorities, heterosexual privilege, activism/mobilization to challenge such discrimination, and the ways sexuality operates in and through various institutions. It includes a chapter on the science of sexuality, from early sexologists to Queer Theory, and several chapters on social problems associated with sexuality such as the commodification of sexuality.