And the Hello and welcome to the naked scientists with me, Greer Jackson and Cat Arnie.

This week we're investigating the Millennium Prize problems, a set of mathematical poses

that if solved, will net the lucky winner a million dollars.

Fancy your chances?

Stay tuned to find out more.

Plus the headlines from the world of science and technology, including why this

is so attention grabbing how fat fish are providing insight into the fight against flab

and what's the future of money?

The Naked Scientists Podcast is powered by UKfast.co.uk. First in the news we take a look at heart disease it's the biggest killer in the world

in 2012 alone it claimed the lives of 17.5 million people around the globe

but new research shows how we might be able to save many of those lives with an ingredient found in toothpaste.

Around 75% of all heart disease involves hardening and clogging of the arteries by fatty lumps known as plaques.

As bits of these plaques fall off, they can block crucial blood vessels in the heart,

leading to heart attacks.

But using a radioactive form of sodium fluoride, that's the decay fighting ingredient found in

toothpaste, Cambridge's James Rudd has developed a technique to screen arteries

for these dangerous hardened hotspots and he joins us now in the studio.

Hi James. Hi, nice to be here. So tell

me a little bit about what's going on when our arteries are hardening. What are

these plaques? How do they form? So we know from studies over the last 20 or 30 years that hardening of the

arteries happens unfortunately as you get older. We also know that cholesterol is

important and increasingly we think that little bits of calcium also build up in the

...