The First Highways · Episode 12 of 12 · 19 min
Meeting in the Middle of the Ocean, and What the Myth Cost
Around 1200 CE, Native Americans and Polynesians met in the middle of the Pacific, shown by DNA and the sweet potato. The finale covers the genomic evidence and the 2024 ancient Rapanui genomes, leaving open who sailed to whom. It then argues that the empty-continent myth was never a neutral error, and its cost still shapes arguments over land and belonging.
Who's who
- Alexander Ioannidislead author of the 2020 Nature study on Polynesian ancestry
- Andres Moreno-Estradaco-lead of the 2020 genomic study
- Victor Moreno-Mayarlead author of the 2024 ancient Rapanui genome study
- Thor Heyerdahl1947 Kon-Tiki voyager who argued for South American contact
- Caroline Roullierco-author of the 2013 sweet potato study
- Jacob Roggeveen+1 more episodemade first European contact with Rapa Nui in 1722
Where it happens
- Rapa Nui (Easter Island)+1 more episodePolynesian island central to the 2024 genomic findings
- Marquesas Islands, French Polynesialaunch region for far eastern Pacific voyages
- Coastal Colombiaregion closest to the Native American source ancestry
- Tuamotu Archipelago, French Polynesiawhere Kon-Tiki ended in 1947
Timeline
- c. 1150-1230 CEbest estimate for a single Native American and Polynesian contact event
- c. 1200 CEsweet potato present in Eastern Polynesia
- 1722first European contact with Rapa Nui
- 1947Heyerdahl's Kon-Tiki raft reaches the Tuamotus
- 2020Nature study finds Native American ancestry across Eastern Polynesia
- 2024ancient Rapanui genomes confirm pre-European contact and show no collapse signature
Still debated
Whether Polynesians reached South America and returned or South Americans sailed west is unresolved, though most experts lean toward a Polynesian round trip. The genetics point to a source population only as closest modern relatives.
