Scientists have discovered evidence that may push back the timeline for humans living in North America from 13,000 years ago to 30,000 years ago, according to two new studies.
원문출처 : https://www.cnn.com/2020/07/22/world/north-america-early-humans-arrival-scn-trnd/index.html
원문출처 : https://www.cnn.com/2020/07/22/world/north-america-early-humans-arrival-scn-trnd/index.html