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How Do They Do It?
Pearls/Knives
Season 15 Episode 17 of 20
How do they grow America's only freshwater pearls in Tennessee? Plus, a look at how the world's sharpest knives are forged
How Do They Do It? airs on Discovery Channel at 7:00 AM, Tuesday 10 September. (Subtitles.)
Topics
Education ➝ Science ➝ Factual Topics
General