A 5,700-Year-Old Neolithic Tomb Yields the World's Oldest Family Tree

Buried beneath a long stone mound in the Cotswolds for nearly six millennia, a Neolithic family kept a secret that modern DNA science has finally unlocked. Researchers analysed the remains of 35 people interred at the Hazleton North long cairn in England and discovered that 27 of them were close biological relatives — five generations of a single extended family. It is the oldest family tree ever reconstructed, and what it reveals about prehistoric society is astonishing.

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