EpisodeS7E1422 min2010-08-27
How Do They Do It?
Battery Power, Chocolate, Toothbrushes
How do they make toothbrushes; how do they produce millions of car batteries; and how are cacao beans transformed into chocolate?
How Do They Do It?
How do they make toothbrushes; how do they produce millions of car batteries; and how are cacao beans transformed into chocolate?