Cal opens this deeply personal episode of Big Questions with a flood of remarkable medical breakthroughs. 3D-printed windpipes. A pancreatic cancer drug that doubles survival rates. Nanotechnology clearing toxic proteins from the body. And he explains why he's sharing them: to balance the grief of losing his friend Sally, a highly-ranked senior tennis player taken too soon by gallbladder cancer. Out of that grief, Cal finds promise. From a man who rode a bike for 24 straight hours 25 years ago who's gone on to raise $31 million for cancer patients. To a vision of the future where technology doesn't kill jobs — it creates them. This episode is exactly what Cal is promising as his podcast evolves toward the Future of Work. Sunshine. Even through difficult times. It'll be a Central Park for the soul. See you every Tuesday.