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Thor Heyerdahl, Norwegian ethnologist and head of the Kon-Tiki expedition, arrives in San Francisco, Ca., from the South Pacific, in this Sept. 29, 1947 photo. Nearly 60 years after Heyerdahl sailed his Kon-Tiki balsa raft across the Pacific to prove a theory about ancient mariners, a team that includes his grandson plans to recreate the 101-day epic voyage _ although the craft will have solar panels, a satellite navigation system and a link to the Internet. (AP Photo)