![](https://image.tmdb.org/t/p/original/s4vlHqP5efHYh3nOFfOfTKclY1L.jpg)
![](https://image.tmdb.org/t/p/w342/5O6yMOGWqfJX0TWHahai4nR8z3i.jpg)
Say It with Sound
Prof Sophie Scott uses hissing cockroaches, chirping crickets and rumbling elephants to explore how humans and animals have evolved to use sound to send messages.
![](https://image.tmdb.org/t/p/w300/s4vlHqP5efHYh3nOFfOfTKclY1L.jpg)
![](https://image.tmdb.org/t/p/w300/eIHXl4rbMtuyTSDl6WBPyZVzPvD.jpg)
![](https://image.tmdb.org/t/p/w300/uRM8vPQUhqsAGc834IgmffWxUuL.jpg)
![](https://image.tmdb.org/t/p/w300/rE2CWaVegs71lW8OSeOti3rh61P.jpg)
Other episodes for this season
![Say It with Sound](https://image.tmdb.org/t/p/w300/s4vlHqP5efHYh3nOFfOfTKclY1L.jpg)
![Silent Messages](https://image.tmdb.org/t/p/w300/s4vlHqP5efHYh3nOFfOfTKclY1L.jpg)
![The Word](https://image.tmdb.org/t/p/w300/s4vlHqP5efHYh3nOFfOfTKclY1L.jpg)
Prof Sophie Scott uses hissing cockroaches, chirping crickets and rumbling elephants to explore how humans and animals have evolved to use sound to send messages.