Why Rats Love Cities, Science Of Saliva And Taste. May 5, 2023, Part 1
![](https://media.wnyc.org/i/800/0/l/85/2023/05/rat-trash-city.jpg)
It's a rat's world.
( Shutterstock )
( Shutterstock )
Hosted by Ira Flatow
Produced by Science Friday and WNYC Studios