The Good Life is a new book by Robert Waldinger and Mark Schultz. They say relationships are the key to aging well, staying healthy and happy. Steven Dubner: I think there's good reason to believe that real relationships happen in three dimensions. He says if you want to live a healthy life into your 80s or 90s, put some of these things on autopilot.
How far would you go to extend your life? What’s the best way to stay sharp as your brain ages? And does Keith Richards deserve a Nobel Prize?