From APM, American Public Media, and WNYC.

This is Freakonomics Radio on Marketplace.

Here's the host of Marketplace, Kyra's Doll.

Time now for a little Freakonomics radio.

It's that moment every couple of weeks where we talk to Stephen Dubner,

the co-author of the books and the blog of the same name.

It's the hidden side of weight.

What is it? Yes?

Everything Dubner. Good to have you back.

Hey, Ky, good to be back.

I bring to you today the topic of good citizenship.

Good corporate citizenship to be precise.

I bet you have heard this kind of thing a million times before.

In my particular job, I'm trying to have the biggest impact in terms of reductions in greenhouse gases.

And so I get to think of places that have nothing to do with Google's core business

but where we can really have a big impact in reducing greenhouse gas.

Yeah, okay. And that's it.

And I'm not really having heard that, but okay.

Well, that's a Google promotional video.

That's another kind of thing that you see more and more these days.

And where firms talk about their high level of corporate social responsibility or CSR.

Yep.

...