After Alzheimer's, Parkinson's is the second most common neurodegenerative disorder, impacting 10 million people worldwide. While there's no cure, CBS Sunday Morning takes a look at an inspiring approach to combating its symptoms—rock climbing. Join Lesley Stahl as she introduces us to a group of courageous individuals scaling the Carderock Cliffs of Maryland. Led by instructor Molly Cupka, these climbers prove that perseverance, community, and movement can defy expectations and empower those living with Parkinson's.