Archaeologists have discovered a Clovis point, the characteristically fluted projectile point associated with the Clovis culture in the Mexican state of Zacatecas.
A study has dated a significant assemblage of stone artefacts to 16-20,000 years of age, pushing back the timeline of the first human inhabitants of North America before Clovis by at least 2,500 years.
An animal once thought to have disappeared from North America before the arrival of humans might have actually roamed the continent longer than previously thought-and it was likely on the list of prey for early humans, researchers from the University of Arizona and elsewhere have found.
The genome of a child who died some 12,600 years ago in Montana – the oldest known human remains from North America – has been sequenced for the first time.