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What is the strongest substance in the universe?
A question that isn't as easy to answer as you might think. Drs Rutherford and Fry quiz materials scientist Mark Miodownik and spidergoat creator Dr Randy Lewis in their quest to find an answer. Contenders include spider silk, diamonds, carbon fibre and steel.
First broadcast on The Curious Cases of Rutherford & Fry, 7 October 2016.
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