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The Happy Pod: The dolphins who 'smile' at their friends

The Happy Pod: The dolphins who 'smile' at their friends

Update: 2024-11-231
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Researchers have found that just as we smile at friends, dolphins change their expression too while interacting. Also: the college baseball star with a prosthetic leg and the first robotic double lung transplant.

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The Happy Pod: The dolphins who 'smile' at their friends

The Happy Pod: The dolphins who 'smile' at their friends

BBC World Service