Stripping down science, the naked scientists. Well, it is Sunday the 19th of December.

Welcome to the Naked Scientists with me, Chris. Well, hello, it is Sunday the 19th of December.

Welcome to the naked scientist with me, Chris Smith.

And with me, Dr. Katani.

And I'm Dave Ansel.

It's our Christmas special this week,

and we've got some festive treats in store for you

including finding out whether it's worth asking Father Christmas for a fancy

carbon fiber-based bike or if an old-fashioned steel one is just as good.

Kat. And we'll also find out what festive food and drink combos are best for avoiding dyspepsia, better known

as indigestion.

I've got a fantastic silence trick you can use to impress everyone at your Christmas party.

I'll show you how I can blow out candles round corners.

Sounds intriguing, thank you Dave.

And also on the subject of the festive period, open your drinks cabinets and grab your cocktail shaker.

So what it was that it takes sodium alginate and calcium chloride.

Add a flavor and mix it with the alginate and then drop it into the calcium chloride bath and form these little spheres.

So one of the things you could do with these little spheres is put them in a glass of

champagne and they'd move up and down like a lava lamp.

And yes, they are edible. That's molecular mixologist Darcy O'Neill,

and he'll be telling us about the chemistry that you can bring to the cocktail bar.

If you've got any questions for us, we would love to hear from you. to the

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