Kicked Out of Harvard for Speaking Truth on Gender | Biologist Carole Hooven

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In elite circles, it has become strangely difficult to say out loud what every biology department taught as recently as 10 years ago: that sex is binary, that testosterone matters, and that average differences do not mean categorical rules. That’s why I wanted to sit down with Carole Hooven, an evolutionary biologist who spent 20 years at Harvard teaching hormones, behavior, and evolutionary psychology before she was pushed out for stating precisely that.

In our conversation, Hooven traces how she got here: from her early fieldwork studying chimp aggression in Uganda, to her best-selling book on testosterone, to the moment a single Fox News clip triggered a campus-wide effort to paint her as “dangerous.” She explains what research actually says—about rough-and-tumble play, aggression, libido, and the long-run effects of puberty blockers and cross-sex hormones—and how activists and journalists systematically mislead the public.

Hooven isn’t angry or ideological; she is empirically careful. She draws a distinction almost nobody in public debate seems capable of holding anymore: Sex itself is binary, but sex-associated traits form overlapping distributions. Confusing those two ideas is what produces so much intellectual chaos and so much institutional cowardice.

This episode challenges the comforting myths: that these debates are “just semantics,” that biology can be legislated away, and that open scientific inquiry can coexist with fear of one’s students. What Hooven makes clear is that the science hasn’t changed, only the cost of talking about it.