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 HD at 6:00 AM, Thursday 13 February. (Subtitles.)
Learn more about How Do They Do It? and other education/science/factual topics on our factual page
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