Peak oil is the greatest challenge humanity has ever faced. If World War II rates a 1 on a scale of 1 to 10, global warming is a 3 and peak oil is a 12. Most experts who write about peak oil predict complete economic collapse within a decade, followed shortly thereafter by anarchy.
And here's a wicked rant from my favorite ranter, James Kunstler. Another tidbit:
I believe the stunning failure of [fiscal] responsibility actually can be accounted for, though my theory may not be to everyone's taste (especially the science hard-asses out there). In a word: entropy. The US has enjoyed unprecedented energy inputs and the result is unprecedented entropy outputs. The protean force of entropy then manifests as degradation in just about everything around us from the immersive ugliness of a landscape overbuilt with WalMarts, Pizza Huts, and vinyl houses, to the sexual perversion available on the Internet, to the surrender of standards and norms by executives in the financial sector. It's as simple as that. Entropy rules.
Oh, yea, have a nice day :)