On the Spot (2011)

Inventions, Bad Ideas, The World in Numbers

TV-G
S3 • E15    Feb 17, 2014    20m
From uncovering some of the world’s best inventions such as the spinning wheel, carding machine, and first mechanical calculator, to looking into some of the worst ideas that were given a patent, to some of the most surprising statistics about the world around us.

Where to Watch On the Spot (2011) - S3 • E15

 

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