This episode is presented by eBay.

Rob, everyone loves a deal and a bargain from time to time, don't they? Absolutely, mate. And you know where you can grab a great deal? Talk to me. Where? The eBay app. Yes, you are correct. You didn't need to talk to me. I already knew it. I love eBay. When you're buying, you can discover loads of hidden gems. there's so many items where you think I would have never found that anywhere else.

Then when you're buying, you can discover loads of hidden gems. There's so many items where you think I would have never found that anywhere else. Then when you're selling, it's so simple and most

importantly, free. It's free, Rob. When it's this easy to sell for free and there's great deals

on things you love. You can't help but say when it's eBay. It excludes vehicles and business

sellers.

Welcome to Science Talk, the weekly podcast of Scientific American for the week of February 25th, 2009.

I'm Steve Merski. This week on the podcast, Sean Carroll talks about his new book, Remarkable Creatures,

and we'll also have a brief chat with Katie Palfrey.

She's from foundanamels.org. And she'll be talking about a program aimed at trying to develop a non-surgical method

for neutering the millions of dogs and cats that each year have operations or add to the overpopulation problem.

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

The annual meeting of the American Association for the Advancement of Science,

the AAAS, is like a one-stop shopping center for people like me.

And for the next few weeks, you'll be hearing interviews that I did from this year's meeting in Chicago,

from February 12th to the 16th.

Sean Carroll was at the meeting.

He's an evolutionary biologist at the University of Wisconsin and a terrific writer.

His new book, Remarkable Creatures, just came out.

We spoke in a lobby at the convention hotel.

So let's talk about Remarkable Creatures.

This is your newest book. First of all, for anybody

...