Polynesia of the plant in the Cook Islands have been radiocarbon-dated to 1000, and current thinking is that it was brought to central Polynesia c. 700 and spread across Polynesia from there, possibly by Polynesians who had traveled to South America and back. Thor Heyerdahl proposed in the mid-20th century that the Polynesians had migrated from the northwest coast of Canada by large whale-hunting dugouts, and from South America on balsa-log boats. Many anthropologists have criticised Heyerdahl's theory, including Wade Davis in his book "The Wayfinders". Davis says that Heyerdahl "ignored the overwhelming body of linguistic, ethnographic, and ethnobotanical evidence, augmented
Kon-Tiki (1950 film) raft and its launch from Peru. Thereafter it is a film of the crew on board, shot by themselves, with commentary written by Heyerdahl and translated. The whole film is black and white, shot on a single 16mm camera. A small amount of color footage of Kon-Tiki does exist. Kon-Tiki (1950 film) Kon-Tiki is a Norwegian-Swedish documentary film about the Kon-Tiki expedition led by Norwegian explorer and writer Thor Heyerdahl in 1947, released in Sweden, Norway, Finland, and Denmark in 1950, followed by the United States in 1951. The movie, which was directed by Thor Heyerdahl and edited by Olle