Air-conditioning can feel like the only way to get through increasingly hot summers, but it’s an expensive, power-hungry way to keep cool.  How necessary is it? And how necessary is it to raise our thermostats up from 72 degrees? Guest: Adam Clark Estes, senior technology correspondent at Vox. Want more What Next? Subscribe to Slate Plus to access ad-free listening to the whole What Next family and across all your favorite Slate podcasts. Subscribe today on Apple Podcasts by clicking “Try Free” at the top of our show page. Sign up now at slate.com/whatnextplus to get access wherever you listen. Podcast production by Elena Schwartz, Paige Osburn, Anna Phillips, Madeline Ducharme and Rob Gunther. Learn more about your ad choices. Visit megaphone.fm/adchoices