Thor Heyerdahl, an adventurer and ethnographer, discusses his newly published book, "The Ra Expeditions." He talks about his adventures sailing from Africa to South America on the ships "Ra" and "Ra II" which were made from papyrus. Heyerdahl explains the trial and error he had getting the papyrus reeds, building the ship, and sailing. Briefly the two discuss environmental concerns with the ocean. Heyerdahl also talks about ancient peoples and their cultures and technologies they used. Near the end of the interview Thor reads a passage of his book.