All engine running,

running, absolute genius.

Get this.

Welcome.

This is the show where we bring science.

What that essentially means is discovery,

sources, research, technology, unbelievable.

Without further ado, this is the Naked Scientists.

Hello, welcome to the Naked Scientists.

This is the program that brings you the latest breakthroughs in Science, technology and medicine. I'm Chris Smith and

coming up this week why we might need to redraw dinosaur faces. It turns out

T-Rex had lips. How do we miss that? Also as the government moves to make laughing gas illegal we look at

how it works and why they're doing this and is it time to call time on changing the

clocks each year? The Naked Scientists podcast is powered by UKfast.co. UK. Dinosaurs exist in movies, books, museums and computer games, and we've interpreted

what we think they looked and sounded like based on their fossil remains, which inevitably means a lot of guesswork

has been involved. And if you picture a stereotypical T-Rex, you probably end up imagining

a fearsome-looking array of exposed teeth projecting from both jaws of its head.

But we might have missed a crucial detail about the faces of these animals.

They probably had lips that would have hidden those teeth.

When teeth are covered by lips, they stay wet,

and this protects the enamel.

And by looking at fossilized teeth from T-Rex type dinosaurs,

...