Is kindness contagious?

The kind boss who transformed their employee's mental health – Natalie and Gillian share their amazing story with Claudia Hammond. And new research finds kindness really is contagious - Alison van Diggelen hears from scientists in California that kindness really does spread. Plus guest professor Monica Lakhanpaul discusses vaccine effectiveness against the variant first identified in India and addresses ethical questions of vaccinating children. Plus new science on how mammals breathing through their bottoms could be a future solution to oxygenating human blood without risking the lung damage caused by ventilators. Presenter: Claudia Hammond Producer: Erika Wright (Photo: A boy protects his younger brother from the rain with an umbrella. Credit: Estersinhache fotografía/Getty Images)