T-rex terror!

How a Tyrannosaurus rex was capable of exploding dinosaur bones with its powerful teeth...

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Stephen Fry goes back 68 million years this week to witness the extraordinary power of a Tyrannosaurus rex's bite. The actor and presenter doesn't get bitten himself, of course, but watches a T-rex's fearsome jaws brought back to life with a mechanical replica that crushes through a cow skull and a brick in seconds!