The World Without Us looks like an
The World Without Us looks like an interesting read: "If a virulent virus -- or even the Rapture -- depopulated Earth overnight, how long before all trace of humankind vanished? [...] Days after our disappearance, pumps keeping Manhattan's subways dry would fail, tunnels would flood, soil under streets would sluice away and the foundations of towering skyscrapers built to last for centuries would start to crumble." Here's a similar article from New Scientist from late 2006. (via mr)