I'm Nicco Evans, currently living in Bavaria in Germany. You're listening to the Happy Pod from the BBC World Service.

I'm Jonat Jolil and in this edition we hear about a surprising similarity between us and dolphins.

When the first dolphins start smiling, the other dolphin most of the time respond with the same

facial expression.

A medical breakthrough with the world's first fully robotic double lung transplant.

It's amazing what it's done for me.

Thank you is not a good enough word.

This has gave me my life back.

And?

The more stressed you get about not being able to talk,

you get even more dysregulated,

which makes it even harder to talk.

How clothes are making it easier for autistic people to communicate.

Researchers have found that just as we smile at friends, dolphins change their expressions too when they're interacting.

They can often be observed playing with objects and chasing each other seemingly just for

the fun of it.

Now researchers have found that bottlenose dolphins have an, quote, open mouth expression

that they use to communicate with each other during play, like a human smile.

The research published in the journal Eye Science looked at 22 bottlenose dolphins

and found that when they opened their mouths at

their friends, they would often mimic the facial expressions back. Dr. Elizabetha Palagi

from the University of Pisa described the findings to the happy pods Isabella Jewel.

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