Drawing on empirical evidence and evolutionary theory, we argue that biological sex is most coherently defined as a binary classification of reproductive strategies rooted in anisogamy (the productio....

Evolutionary biologist Colin Wright discusses the science of biological sex and why a simple biological fact has become one of the most contentious issues of our time—including among skeptics.

Activists are flooding the zone with pseudoscience on sex because too much of their politics now depends on it.

Archives of Sexual Behavior -

Archives of Sexual Behavior -

A Conversation With Evolutionary Biologist Colin Wright

In a recent post on his site “Reality’s Last Stand,” Colin Wright reprints an article he published a few months ago in Archives of Sexual behavior, outlining why there are exactly…

The share of young people claiming another ‘gender identity’ exploded. Now surveys show it is receding.

The share of young people claiming another ‘gender identity’ exploded. Now surveys show it is receding.

A massive study finds that trans-identifying teens, especially those who identify as ‘nonbinary,’ are more likely to bully others than be bullied.

Too many books teach kids they were born wrong; mine teaches them to love the body they’re in.

The organization has peddled pseudoscience to vulnerable kids.

Too many books teach kids they were born wrong; mine teaches them to love the body they’re in.

The organization has peddled pseudoscience to vulnerable kids.

Jill Lawrence’s latest piece shows how political slogans about “trans rights” collapse under basic facts of biology, law, and evidence-based medicine.

Jill Lawrence’s latest piece shows how political slogans about “trans rights” collapse under basic facts of biology, law, and evidence-based medicine.

Demanding viewpoint affirmative action is not the correct response to Harvard’s longstanding political bias.

Demanding viewpoint affirmative action is not the correct response to Harvard’s longstanding political bias.

Most states allow natives to alter their recorded sex, an affront against science and a danger to women.