Racist pseudoscience can be hard to spot, but its toxic effects on society are plain to see: feeding nationalism, fueling hatred, endangering lives, and corroding our discourse on everything from sports to intelligence. Cutting-edge genetics are hard to grasp-- and all too easy to distort. Paradoxically, these misconceptions are multiplying even as scientists make unprecedented discoveries in human genetics. Rutherford dismantles outdated notions of race by illuminating what modern genetics actually can and can't tell us about human difference. The racial categories still dividing us do not align with observable genetic differences-- in fact, our differences are so minute that, most of all, they serve as evidence of our shared humanity.