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#446 – Ed Barnhart: Maya, Aztec, Inca, and Lost Civilizations of South America
Lex Fridman Podcast
Unveiling Ancient Migrations
The understanding of early human migrations to the Americas has evolved significantly with advancements in DNA technology. While traditional views placed the first arrival around 12,500 years ago, new genetic evidence suggests migrations may have occurred as early as 30,000 to potentially 60,000 years ago. The flexibility of the land bridge during the Ice Age allowed for intermittent crossings, leading to distinct genetic markers, or haplogroups, that are exclusive to the Americas. This emerging evidence challenges long-held beliefs and underscores the complexity of early human settlement patterns.
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