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Welcome to Science Talk, the weekly podcast of Scientific American.

For the seven days starting March 7th.

I'm Steve Murski.

This week on the podcast,

Leave it to beavers.

To come back to New York City, we'll talk with the guys who found the first physical evidence

that a wild beaver had returned to the city for the first time in 200 years.

We'll also talk with journalists and author Alan Wiseman

about why we like stories like this one. And we'll hear from Elaine McSherry, winner of the

annual Access Science Competition in Dublin for explaining your research so that it can actually

be understood. Plus, we'll test your knowledge about some recent science in the news. First up, Steve Sautner and John Delaney from the Wildlife Conservation Society.

I went to the Bronx Zoo last week shortly after the beaver was found to have moved in

and spoke to Steve and John on a bridge over the Bronx River.

That low rumble you may hear in the background is the traffic on the incredibly nearby Bronx River Parkway.

Hi guys. Tell everybody who you are. I'm Stephen Sautner and with the communication staff for the

Wildlife Conservation Society at the Bronx Zoo. And I'm John Delaney and also a member of the

communication staff at the Bronx Zoo. In fact, in this situation, you're the guys who actually made the discovery here.

...