How ancient DNA is transforming our view of the past

Prof David Reich of Harvard Medical School is one of the leading lights in the field of ancient DNA. His team’s work has cast a new perspective on human history, reconstructing the epic migrations and genetic exchanges that shaped the people of different regions worldwide. Here he explains how this revolution in our understanding unfolded.

If it seems as if there has been an avalanche of recent headlines revealing insights into the travails of our ancient ancestors, you’d be right.

From the fate of the people who built Stonehenge to the striking physical appearance of Cheddar Man, a 10,000-year-old Briton, the deluge of information has been overwhelming.

But this step change in the understanding of our past has been building for years now. It’s been driven by new techniques and technological advancements in the study of ancient DNA – genetic information retrieved from the skeletal remains of our long-dead kin.

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