A new study challenges the narrative around Cahokia's demise by revealing a complex series of migrations, warfare, and ecological changes in the 1500s and 1600s. Fecal stanols derived from human waste preserved deep in the sediment under Horseshoe Lake provided crucial evidence for a Native American presence in the region.
Researchers discovered significant lead pollution at Kincaid Mounds site due to galena processing and use by Native Americans. Sediment core samples revealed higher lead levels during the pre-Columbian period, tracing back to galena deposits in Missouri and the Upper Mississippi Valley.
Researchers from IUPUI reconstructed 2,100 years of temperature and precipitation data, pointing to climate change as a primary cause of the disappearance of the Mississippians. The study found that drought conditions due to changed atmospheric circulation undermined agricultural production, leading to the destabilization of sociopolit...
Thomas Wynn is creating a three-dimensional map of West Virginia's subsurface using well cuttings from 200 wells. He aims to find oolites that contain natural gas and better understand the transition from greenhouse to ice-age conditions during the Mississippian Age. The study has significant implications for accessing natural gas rese...