It's been a hot summer. "This is Wildfire: How to Protect Yourself, Your Home, and Your Community in the Age of Heat" explores the relationship between wildfire, humans and nature. Authors Nick Mott and University of Montana professor Justin Angle offer tips on how to prevent fires and stay safe if they do ignite. And, for researchers to find ways to protect American cities from extreme temperatures, they have to know exactly how hot it is. That's why cities like Phoenix and Chicago are undergoing heat mapping projects. Here & Now's Peter O'Dowd and Chris Bentley report on the projects. Then, solar energy is becoming more popular in the U.S. but infrastructure can take up lots of land. Enter floating solar. WUSF's Steve Newborn takes us to a pond in Florida where one energy company is conducting a floating solar pilot program.