UNIVERSITY OF WISCONSIN-MADISON, MADISON, Wis.—A new study shows climate change may have contributed to the decline of Cahokia, a famed prehistoric city near present-day St. Louis. And it involves ancient human poop. Published today [Feb. 25, 2019] in the Proceedings of the National Academy of Sciences, the study provides a direct link between changes in Cahokia’s … Continue reading Ancient poop helps show climate change contributed to fall of Cahokia