The things that killed the world were (in no order of appearance): machine learning, Facebook ads, floods, water shortages, lobbyists, the flu, Stevia, the breakdown of civil discourse, nuclear radiation, corporate recruiters, mammoth legs in Alaska defrosting in melting permafrost, sub-cranial overnight advertising, asteroids, supernovas, solar flares, nuclear war, Ice-9, race riots, survivalists, BPA, wildfires, mass suicide, cryptocurrency, alien invasion (subatomic), casaba melon smuggling, opiates, ringtones, massive open online multiplayer games, republicans, and cow farts.