For around 700 years, Native people of the American Great Plains hunted bison at a site in central Montana that archaeologists call Bergstrom. Then, around 1,100 years ago, humans abandoned the site even though bison remained abundant in the area, according to a statement released by Frontiers. "The Bergstrom site presented a puzzle," paleoecologist John Wendt of New Mexico State University said. "Why would hunters stop using a site that had worked for so long?" In 2019, Wendt's team began digging and investigating three-foot-by-three-foot excavation pits to try to better understand the Bergstrom site's use and eventual disuse. Researchers collected...