Researchers found direct evidence that Clovis people relied heavily on mammoths for food, using isotopic analysis to confirm 40% of a Clovis mother's diet came from mammoths. The study highlights how hunting large animals supported the Clovis people's mobility and rapid spread, while also contributing to the extinction of Ice Age megafauna...The study, featured on the Dec. 4 cover of the journal Science Advances, employed stable isotope analysis to reconstruct the diet of the mother of an infant found at a 13,000-year-old Clovis burial site in Montana. Previously, researchers inferred prehistoric diets primarily through indirect evidence, such as stone tools...