Concerned about the state of marriage – and thus the ability of whites to procreate – eugenicists were behind some of the earliest modern marriage manuals.
Scientists don't ask how some people evolved to be tall. In the same way, asking how homosexuality evolved is the wrong question. We need to ask how human sexuality evolved in all its forms.
A new study of nearly 500,000 individuals finds that many genes affect same-sex behavior, including newly identified candidates that may regulate smell and sex hormones.
Minority sexual identities are on average less satisfied with their lives — but being accepted is crucial to this.
Understanding the sex lives of fungi can help in finding answers about disease control.
How do different species have sex? Medieval illuminated manuscripts contain some surprisingly varied depictions.
'LGBTIQA+' is a term often employed to be inclusive – but it runs the risk of being so inclusive it loses all meaning.