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, excludes vehicles.

Welcome to Science Talk, the podcast of Scientific American for the seven days starting July 26th. I'm Steve Murski.

This week on the podcast, we'll hear more from James Bejan. He's a former astronaut and currently

the director of the Department of Veterans Affairs National Center for Patient Safety.

Last week, we talked about shuttle missions. This week, he'll talk about patient safety.

We'll also test your knowledge about some recent science in the news.

First, though, we'll hear from Kip Hodges. He was an MIT geologist for 23 years before recently becoming the founding director of the new School of Earth and Space Exploration at Arizona State University.

He's also the author of an article in the August issue of Scientific American called

Climate and the Evolution of Mountains.

I called him at his office in Tempe.

...