Thor Heyerdahl's journeys and theories have never been taken very seriously by scientists. But his books about his expeditions were very popular. The Kon-Tiki Expedition: By Raft Across the South ...

Heyerdahl traveled to several islands in South America between 1946 and 1947 to prove his theory that they had been populated by natives. A book about Thor Heyerdahl's journey has become an ...