Two-hour special on the History Channel called Life After People, 9pm tonight and rerunning throughout the week.
What would happen to planet earth if the human race were to suddenly disappear forever? Would ecosystems thrive? What remnants of our industrialized world would survive? What would crumble fastest? From the ruins of ancient civilizations to present day cities devastated by natural disasters, history gives us clues to these questions and many more.
This appears to be unrelated to Alan Weisman's well-reviewed The World Without Us. If it comes down to watching this or Killer of Sheep, watch Sheep.
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)