It's been two decades since Thor Heyerdahl’s Polynesian Kon-Tiki voyage, and now he’s investigating whether it might be feasible to sail from Africa to America using a boat constructed solely from reeds, rope, and wood. With the Great Pyramid of Khufu as a backdrop, he and a group of experienced craftspeople begin transforming twelve tons of papyrus into a vessel capable of carrying seven people along with their equi…