To keep places like Phoenix habitable, we need to have air-conditioning. But to have air-conditioning, we need a functional, modern electrical grid. With America’s grid already aging—and more demand coming in the form of electric cars and more A/C for hotter weather—what will it take to keep it going as the weather gets more extreme?  Guest: Dr. Joshua Rhodes, research scientist at the University of Texas at Austin studying energy systems and how they interact with our environment, climate, and life. If you enjoy this show, please consider signing up for Slate Plus. Slate Plus members get benefits like zero ads on any Slate podcast, bonus episodes of shows like Slow Burn and Dear Prudence—and you’ll be supporting the work we do here on What Next TBD. Sign up now at slate.com/whatnextplus to help support our work. Learn more about your ad choices. Visit megaphone.fm/adchoices