Scientists use teeth to trace childhood journeys of Africans freed from slave ships

A new study has uncovered the childhood origins of 152 Africans rescued from illegal slave ships and taken to Saint Helena nearly 200 years ago. Using tooth chemistry, ancient DNA and historical records, researchers found they came from different parts of Central Africa, with many forced to travel long distances before reaching the coast. The findings help restore the identities of people whose lives were erased by the transatlantic slave trade.