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
David Mayer de Rothschild the trip. The Plastiki successfully completed its journey to Sydney on 26 July 2010. Along with the "Plastiki" de Rothschild launched a platform for community interaction and sharing stories called "Myoo" (the name comes from the pronunciation of "community"). The "Plastiki" was named one of 2010's fifty best inventions by "Time" magazine. The "Plastiki" is named after the "Kon-Tiki", a raft used by Pacific explorer Thor Heyerdahl. The construction of the ship is notable not only for its use of recycled plastic bottles as a primary building material, but also for using reclaimed and environmentally friendly materials throughout. In April