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.

Science talk will begin after this short message.

Hey there. I'm Brian. I'm Andrea. And we're with Cold Spring Harbor Laboratory.

And you've probably heard about CRISPR. So I think this is something that everyone now is grappling with us. How do we proceed?

There are no easy answers.

That's Jennifer Dowdna, co-discoverer of the CRISPR gene editing tool, talking with us on our

BASPERS podcast.

We'll be back in a bit to discuss what she's concerned about.

Stay tuned.

Welcome to Scientific American Science Talk posted on October 17th, 2017.

I'm Steve Murski. On this episode, I think most people think of antibiotics is only a thing that

goes into humans in a medical context. But around the world, at least twice as many antibiotics go into livestock.

That's Marin McKenna. She's a journalist and author specializing in public health,

global health, and food policy. She's the author of the award-winning superbug,

The Fatal Menace of Mercer concerning antibiotic-resistant Bacteria, which we talked about on the podcast back in 2012.

Her new book is Big Chicken, the incredible story of how antibiotics created modern agriculture

and changed the way the world eats.

...