Educator and author Simran Jeet Singh is Sikh. Most of his fellow Americans have no idea what Sikhism is - causing some to treat Simran with suspicion and hostility. But one of the key teachings of his religion is that all things and all people are connected - something that offers Simran comfort and hope in even the darkest moments.

In the first of a two-part show, Dr Laurie Santos talks to Simran about his book - The Light We Give: How Sikh Wisdom Can Transform Your Life - and finds that the centuries-old traditions of Sikhism map surprisingly well over the latest happiness science.

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