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Thank you. and quote, Science Podcast to receive special offers. Welcome to the Science Podcast for January 6, 2017.

I'm Sarah Crespi.

In this week's show, newswriter Megan Gannon discusses the fate of tissue samples

gathered from prisoners by Nazis with

Alexa Billo. Kelly Servic talks with me about a pair of robust-seeming tests for mad

cow disease. And Catherine Matasik is here with a roundup of stories from our daily news site.

Now we have Catherine Matissick. She's an editor for our daily news site.

Now we have Catherine Mattisick.

She's an editor for our daily news site here to talk about some recent online stories.

First up, we have a story on hatching dino babies.

We know dinosaurs laid eggs and made nests, and it's likely some even sat on their eggs. But how long did they sit there? It's tough to tell looking back millions of years, but now researchers think they found an

answer for some types of dynos based on their teeth. So, Catherine, how can teeth help us with this question?

Sitting on eggs and teeth, it does seem like a bit of a stretch, doesn't it?

Yeah.

You might have heard this before, but did you know that teeth, your teeth, my teeth, your cat's teeth, have growth rings?

Mm-hmm.

...