How Do They Do It? Season 7 Episode 14 Battery Power, Chocolate, Toothbrushes ( Air Date 2010-08-27 ) Genre Documentary category. Overview "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? Season 7 Episode 14 Battery Power, Chocolate, Toothbrushes
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