 My last stop in Florida is to meet Harold Wanless. You've had a wet trip. Yes, a very wet trip. He's a professor at the University of Miami and a sea level rise expert. For decades, he's been warning about the future of Florida, a future that now has the 82-year-old considering leaving his beloved home in Coral Gables and moving to higher ground. We've had over a foot of sea level rise in the last 90 years here.