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 weekly podcast of Scientific American posted on July 31st, 2009.

I'm Steve Murski.

This week we'll look at the contents of the August issue of Scientific American magazine

with editor-in-chief Mariette de Christina and staff editor Kate Wong.

Plus, we'll test your knowledge about some recent science in the news.

Without any further ado, here we go.

We spoke in Mariette's office.

And I'm here with Mariette de Christina.

You can see a lovely photograph of her in the letter from the editor column.

...