Peak oil: the geologists speak.

Check it out: WorldChanging: The End Is Nigh (Now With Charts!): "Three out of five petroleum geologists surveyed believed that global oil production would 'peak' within 10 years."

Furthermore: "The geologists may be wrong, of course. But trying to outguess the considered opinion of well-informed scientists is a sucker's game. So no matter what oil prices do in the short term, we'd be wise to prepare ourselves for tightening oil supplies, and higher oil prices, in the not-too-distant future."