Polynesian navigation snow. In the mid-20th century, Thor Heyerdahl proposed a new theory of Polynesian origins (one which did not win general acceptance), arguing that the Polynesians had migrated from South America on balsa-log boats. The presence in the Cook Islands of sweet potato that is a plant native to the Americas (called "kūmara" in Māori), which have been radiocarbon-dated to 1000 CE, has been cited as evidence that Americans could have traveled to Oceania. The current thinking is that sweet potato was brought to central Polynesia circa 700 CE and spread across Polynesia from there, possibly by Polynesians who had traveled
Heyerdahl Award academia, science, government, NGO’s and the maritime industry. It is possible to submit nominations online at www.heyerdahlaward.com. The Thor Heyerdahl Environmental Award is additionally supported by Guard, Skuld, Det Norske Veritas and Trade Winds. Heyerdahl Award The Thor Heyerdahl International Maritime Environmental Award was established in 1999 by the explorer and scientist Thor Heyerdahl (1914–2002) and the Norwegian Shipowners' Association. The prize recognizes candidates from the shipping industry that have made an outstanding contribution to the environment. To qualify for the award, candidates must have demonstrated exceptional technical innovation and environmental work in correspondence with Thor Heyerdahl’s spirit for the