World-renowned author and scientist Neil deGrasse Tyson became fascinated with astrophysics when he was a teenager. Best-selling science writer Mary Roach is known for her quirky humor and wide-eyed curiosity as she explores the often bizarre science of human behavior.

This episode includes six unique perspectives about passion, purpose and meaning in our own lives.

Investment advisor and wealth manager Karen Firestone shares a story about a chance encounter with advice columnist Ann Landers, who gave her a new understanding of risk vs. reward. Obstetrician-gynecologist Rose Gowen speaks about her mission to get her small city with a large obesity problem to exercise more and eat better food. Emily Esfahani Smith, author of "The Power of Meaning", talks about her passion for learning from strangers. Long distance trucker Finn Murphy reveals a long-time love of America's roads and highways.