To my knowledge, the idea was first tested and publicized by Norwegian scientist and adventurer Thor Heyerdahl (see his book, Kon-Tiki). The theory - that ancient peoples could have traveled by boat back-and-forth from Africa to South America for trade and possibly migration.
A German scientist is about to make the latest attempt at such a crossing. Read about it from The Jersey Journal.
A German scientist is about to make the latest attempt at such a crossing. Read about it from The Jersey Journal.
