The worse case scenario has played out. It's a few years from now, and Earth has suffered a major catastrophe - be it an asteroid impact, a nuclear holocaust or merely a global pandemic. Doomsday has arrived. In Part II of our two-part series, you'll find out how the planet - and its mantle of remaining life - carries on. So humans are gone: what next?
Also, why mass extinctions are helpful to evolution, and if a few people do survive Armegeddon, how do they begin to put human culture back together?