In this episode of Genetics Unsealed, we take a clear and unflinching look at one of the most widely misunderstood ideas in human biology: race. Although society often treats race as a biological fact, genetics shows that it is a social construct shaped by history, culture, and politics rather than by our DNA.We explore how early European thinkers attempted to classify humans into neat categories, why these ideas fit so comfortably within the framework of colonial expansion, and how this misguided reasoning eventually fed into the development of eugenics in Britain and across the world.Listeners will hear how eugenic thinking took hold, from British intellectual circles to the forced sterilisation laws in the United States and the horrors of Nazi racial policy. We then turn to the present day to understand why confusion between race and genetics persists, how ancestry tests and health statistics often get misinterpreted, and what modern genetics truly reveals about our shared human story.This episode provides a thoughtful and accessible guide to the history, science, and ethics surrounding race and eugenics. It is an essential listen for anyone interested in genetics, social history, or the responsibilities that come with scientific knowledge.