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.

Hi, Steve Murski here, and welcome back for part two of Scientific American Editor-in-Chief Mariettee Christina, talking with Gates Foundation CEO Susan Desmond Hellman.

You mentioned farming in Africa, and that's something I wanted to ask you about, and I know one of the things the letter talks about is making Africa, helping Africa to be able to feed

itself. Can you tell us a little more about that? Yes, the ambitions, again, by 2030 are to

improve productivity so that Africa would be in a position to feed itself. And the letter cites just

one figure with maize, with corn, that there's five times the productivity

in the U.S. than your average African farmer, seven out of ten people make a living in Africa

farming. So this really, really matters in Africa. And it starts with feeding your family,

obviously, but could go to making a living, making some money.

So we focused on, and the foundations had a lot of investments and involvement in agriculture and farming,

...