“Human Biodiversity” is a euphemism that racists use to lend respectability to their pseudo-scientific claim that white superiority has a genetic or evolutionary basis. Many white supremacist ideas derive from this claim: if white superiority is “natural” and immutable, the argument goes, there is no point in attempting to help non-white people whose inferiority is similarly “natural.” Racist science also suggests that it is impossible for white people to live in harmony with non-white people, that society should (continue to) be organized to give white people more power than other people, and that any demographic change that reduces the percentage of white people in a nation can only be detrimental to that nation’s prosperity. The term “Human Biodiversity,” often abbreviated “HBD,” was coined by Jonathan Marks, a prominent critic of racist science, but quickly became popular with the same racists whose ideas Marks intended to reject. Many of the leading “researchers” in HBD receive funding from white supremacist organizations like The Pioneer Fund and publish their findings in white supremacist journals like Mankind Quarterly, which there is a decent chance your university library subscribes to. HBD embodies the evolution of racist pseudo-science from the measurement of visible features like skulls or noses to the study of genetics as a way of inventing racial differences between human beings. As such it may seem like an area of white supremacy where we would be unlikely to find Greco-Roman Antiquity being invoked. Nothing could be further from the truth.