Tracking the private jets of rich people has been a thing for a while, despite the best efforts of the planes’ owners to stop it, but artist and developer Kyle McDonald has come up with a novel use for the data: Using it to predict the end of the world. The reasoning behind McDonald’s site Apocalypse Early Warning is twofold: a) if a nuclear apocalypse is imminent, the rich and powerful will hear about it before the rest of us, and b) if those people do get word that the missiles are en route, they’ll most likely jump in their planes and fly as far from major cities as possible. It’s hard to argue with either of these premises. The site puts these ideas into practice by accessing the public FAA registration data for what it calls “a fixed cohort of business jets”—roughly 11,000 aircraft at the date of publication—and cross-referencing it with the real-time flight data site ADS-B Exchange.…