Cassius Clay publicly joins the Nation of Islam and takes the name Muhammad Ali. When he refuses induction into the Army, he is stripped of his title and forced into exile. After three years, he returns to the ring, but he's lost a step.

Caretakers share their diverse experiences of caring for loved ones in the world of dementia - from diagnosis to saying the long goodbye.

When artist Maleonn realizes that his father is suffering from Alzheimer's disease, he creates "Papa's Time Machine," a magical, autobiographical stage performance featuring life-size mechanical puppets.

Cape Cod author Greg O'Brien is on a journey with Alzheimer's disease. He and host Will Lange go hiking and paddling on the Cape, and talk about how Greg's love of the outdoors is helping him cope.

The story behind the success of In the Heights is so organic to New York City that no one expected it to happen.