Ah, Benny's parents, thanks for coming.

Hiya.

So, Benny has really blossomed this term.

You're telling me, he outgrew his bike. We sold it, on eBay.

Oh, that's not quite what I meant.

It's free to sell on there.

Free to sell?

Easy too. Sold Benny's bike, your guitar, my jacket.

You sold my guitar?

Shall we talk about Benny?

When it's this easy to sell for free, you can't help but say when it's eBay.

Things people love.

T's and Cs Apply, Exclusive vehicles.

Welcome to Science Talk, the more or less weekly podcast of Scientific American, posted on November 15th, 2010. I'm Steve Merski.

And Stephen Weinberg is a legend in physics. In 2009, Weinberg gave a talk to an audience

of science writers at the annual meeting of the National Association of Science Writers in

Austin, Texas. What you're going to hear now is a heavily edited version of that talk, which I've been

holding all this time because in the current issue of Scientific American Magazine, we

have an interview with Stephen Weinberg.

So we wanted to put the two together.

Now, he was a challenge to record because he was holding both a laser pointer and a microphone,

and like any great absent-minded professor would,

...