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
Knut Haugland museum manager. He also received the Defence Medal with three stars. Knut Haugland Knut Magne Haugland, DSO, MM, (23 September 1917 – 25 December 2009) was a resistance fighter and noted explorer from Norway, who accompanied Thor Heyerdahl on his famous 1947 "Kon-Tiki" expedition. Haugland, born in 1917 in Rjukan, Telemark, Norway, took his examen artium in 1937, qualifying him for university study. In 1938 he enrolled in military radio studies and afterward joined the Norwegian Army. In February 1940 he was stationed in Setermoen, and soon fought in battles near Narvik as a part of the Norwegian Campaign against