Evidence buried in gypsum dunes suggests humans arrived far earlier than expected. Radiocarbon dates from three materials agree. Vance Holliday quickly accepted an invitation to do geological research at White Sands in New Mexico. The area, located just west of Alamogordo, is known for its surreal landscape—endless rolling dunes of fine beige gypsum left behind [...]from SciTechDaily https://ift.tt/XJjDCpg
