This episode is presented by eBay.

Rob, everyone loves a deal and a bargain from time to time, don't they? Absolutely, mate. And you know where you can grab a great deal? Talk to me. Where? The eBay app. Yes, you are correct. You didn't need to talk to me. I already knew it. I love eBay. When you're buying, you can discover loads of hidden gems. there's so many items where you think I would have never found that anywhere else.

Then when you're buying, you can discover loads of hidden gems. There's so many items where you think I would have never found that anywhere else. Then when you're selling, it's so simple and most

importantly, free. It's free, Rob. When it's this easy to sell for free and there's great deals

on things you love. You can't help but say when it's eBay. It excludes vehicles and business

sellers.

Welcome to Science Talk, the weekly podcast of Scientific American.

They flipped the on switch for the Large Hadron Collider this week.

We'll talk with Nobel Prize winning physicist Frank Wilcheck about the LHC,

and then we'll get some commentary from Scientific American editor George Musser.

Frank Wilczek is the Herman Feshback Professor of Physics at MIT.

In 2004, he won the Nobel Prize for discovering what's called asymptotic freedom in the theory of the strong force, which holds subatomic particles together to make protons

and neutrons in the atomic nucleus.

For more on that, check out the May 3rd, 2006 edition of Science Talk.

Wilcheck was on the Scientific Advisory Committee of the LHC for six years.

Forgive the sound of my voice on the telephone connection.

I flipped a switch incorrectly, and my voice is a little overmodulated,

but don't worry, I don't say too much.

Dr. Wilczak, thanks very much for talking to me today.

My pleasure.

Let's get to the most important thing first.

How is your opera career going?

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