A scientist whose intuitive theory about ancient Native American monuments in the Big Horn Mountains of Wyoming turned out to be true; a discussion of a the theories of continental drift and plate tectonics; the work of French physicist Jean Baptiste Biot, who confirmed that meteorites showered a small French town in 1803; the work of an archaeologist in York, England, who has found evidence of a peaceful Viking domestic and business culture here; an interview with an archaeologist who has found evidence of a Viking pioneer settlement in Newfoundland which also runs counter to traditional perceptions of the Vikings; the work of a British scientist who tracks radio waves from outer space; and the importance of "wild guesses" in science and the daring of Ben Franklin's electricity experiment with kite and key.