Even before 2017’s floods, fires and explicit nuclear threat, the doomsday clock had been ticking towards midnight, spurred on by the warming planet and the hothead in the White House. Survivalists have been around since the 1930s, but all of a sudden, prepping (making plans for civilizational annihilation) started to feel like the not-crazy thing to do. But how to go about it? Become a one-person militia and stock up on camo and bullets? If you’re a too-rich tech bro, you disrupt the apocalypse: get Lasik, build a panic room and buy an apartment in a luxury tower submerged below ...