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 August 30th.

I'm Steve

Mercky. This week on the podcast, we're going to talk about one of the most mysterious objects

in the universe, the teenage brain. We'll have the first installment of a new segment,

Ask a Scientist, and that's going to be about the Earth's magnetic poles flipping around.

And speaking of flipping around, we'll have the latest Pluto status update.

And we'll test your knowledge about some other recent science in the news, too.

First up, journalist Leslie Sabah.

She's the author of the cover story in the current issue of Scientific American Mind magazine about the teen brain.

I called her at her home in Cleveland. Hi, Leslie. How are you?

...