So, so, so skin.

Keep your good going and breeze through busy days with mullah lights.

Now with a new thicker recipe with Vitamin B6 and Vitamin D. Or go on then? Mull a light, get the good going. You're going to be. Hello, welcome to the naked scientist with me Chris Smith and also with Harriet Johnson.

This week we're looking at the science of right and left-handedness, but not just in people, because

chemicals and even the subatomic particles that make up all the matter in the universe also have a

handiness and we'll find out how. Plus in the news the scientists who've

made a working chromosome from scratch and the monster planet that might be lurking in the outer reaches of our

solar system.

Before we start on the news, let's introduce you to this week's scientific teaser

we're going to be talking about right and left this week so can you tell us

what percentage of countries drive on the right side of the road?

If you'd like to get in touch, you can tweet at naked scientists or you can email Chris at the

Naked Scientist. Scientists.

feedback you have for us here on the program.

This week scientists have achieved what has been hailed as the biological equivalent of climbing

Mount Everest.

They've created a synthetic fully functional

copy of a yeast chromosome. Jeff Buka from New York University Langone Medical

Center is one of the scientists who's leading the project.

Hello, how are you Chris?

Very well, thanks.

First of all, tell us what actually have you achieved here?

...