SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Thor Heyerdahl (1914-2002), Norwegian ethnographer and explorer. Heyerdhal is talking to journalists at Moscow State University, Moscow, Russia, where he has just received an honorary doctorate. Heyerdahl used local materials to build rafts to test his theories that ancient peoples were able to cross the world's oceans. His first and most famous expedition was in 1947, when he and his crew sailed the Kon-Tiki balsa wood raft 7000 kilometres from South America to the Tuamotu Islands across the Pacific. Photographed in 1989.
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