Norwegian explorer and anthropologist Thor Heyerdahl Dies

404153 03: Norwegian explorer and anthropologist Thor Heyerdahl points to a photo of himself on board a papyrus-reed raft which he used on his "Ra Expeditions," November 1970. He was testing the theory that ancient Mediterranean people crossed the Atlantic before Columbus. Heyerdahl, who detailed his 101-day voyage across the Pacific on a balsa log raft in the book Kon-Tiki, died April 18, 2002 at the age of 87. (Photo by Getty Images)