Not Australians.

Not a mysterious lost civilization.

People from northeastern Asia who had crossed into the Americas through Beringia, the land bridge that connected Siberia to Alaska when sea levels were lower, and who had spread southward and eventually populated both continents.

The Anzick child’s genome would eventually help establish this beyond reasonable scientific doubt.

But in 1968, when the construction crew’s earthmover broke open the child’s resting place, much of this was still unknown or contested.

What was found was physically stunning: the remnants of an ancient person, surrounded by some of the most sophisticated stone tools ever made in the Americas, buried in a way that spoke of people who cared deeply about their dead.