Book excerpt: A New York Times Notable Book of 2014 We are doomed to repeat history if we fail to learn from it, but how are we affected by the forces that are invisible to us? What role does Neanderthal DNA play in our genetic makeup? How did the theory of eugenics embraced by Nazi Germany first develop? How is trust passed down in Africa, and silence inherited in Tasmania? How are private companies like Ancestry.com uncovering, preserving and potentially editing the past? In The Invisible History of the Human Race, Christine Kenneally reveals that, remarkably, it is not only our biological history that is coded in our DNA, but also our social history. She breaks down myths of determinism and draws on cutting - edge research to explore how both historical artefacts and our DNA tell us where we have come from and where we may be going.