David Pogue with NOVA car.PBS
Host David Pogue takes a look at what defines strength, examining everything from steel cables to mollusk shells to a toucan's beak. Pogue travels from the deck of a U.S. naval aircraft carrier to a demolition derby to the country's top research labs to check in with experts who are re-engineering what nature has given us to create the next generation of strong stuff.
Nova: Making Stuff Stronger, Wednesday at 9 p.m. on PBS 6.

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