itnewsbot, More evidence that humans were in North America over 20,000 years ago - Enlarge / This illustration shows what the shore of ancient Lake Otero ... - https://arstechnica.com/?p=1973451 #indigenousnorthamerica #peoplingoftheamericas #indigenousamericans #lastglacialmaximum #archaeology #footprints #whitesands #ichnology #science