Modern Marvels

World's Strongest

E49    Oct 17, 2006    44m    TV-PG
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Strength...a powerful word, but what does it mean? How is it measured? Why are some things simply stronger than others. How strong is a rope, a tractor, a diamond, a tugboat or even plastic. How and why strength matter to us every day.
Where to Watch World's Strongest
Cast of World's Strongest
  • Lloyd SherrSelf - Narrator

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