How Do They Do It? - Season 7 Episode 14: Battery Power, Chocolate, Toothbrushes
2010-08-27
- Documentary
How do they make toothbrushes; how do they produce millions of car batteries; and how are cacao beans transformed into chocolate?.
2010-08-27
How do they make toothbrushes; how do they produce millions of car batteries; and how are cacao beans transformed into chocolate?.
