Anyone stuck in a knotted snarl of interstate clovers knows that GPS is both important and imperfect. But if GPS fails while you’re bringing a 737 in for a landing it could be catastrophic. Why is “GPS spoofing” on the rise—and how can airlines protect their flights against being caught up in conflict zones.Guest: Drew FitzGerald, telecom reporter for the Wall Street Journal.Want more What Next TBD? Subscribe to Slate Plus to access ad-free listening to the whole What Next family and 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 Evan Campbell, Patrick Fort, and Cheyna Roth. Learn more about your ad choices. Visit megaphone.fm/adchoices