Climb of the Sensory

Alex Honnold climbed the mighty El Capitan in Yosemite National Park without any safety gear in about four hours using only his hands and feet. The 31-year-old became the first person to climb the 3000-foot granite wall alone without a safety harness or ropes to catch him if he fell. Is he crazy or stupid? Or both? Neuroscientists recently studied Honnold’s brain. They hadn’t seen anything like it. His amygdala, the part of the brain that reacts to fear, lay dormant. Anthony and Jeff discuss this Brock, and what his case might mean for the rest of us.