Season 14, Episode 13 Retractable Ballpoint Pens, Solar Salt, Tubas

First Aired: January 8, 2010

Solar salt; tubas; retractable ballpoint pens.

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  • Premiered: January 6, 2001
  • Rating: TV-G
  • User Rating:4.62 out of 5 (29 ratings)
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  • Premise: A series that shows how familiar objects used in everyday life are made. (more)

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