Effects of an extended period of less oil and/or otherlimited resources?

considering the oil crisis was man made, I would say the effects would be bearable if this happens again. the oil countries were flexing their muscle. The reason this probably wont happen again in the near future, The U.S. is protecting many friendly oil producing countries. the oil producing countries are not a close nit family anymore so to speak. as for the research, it is already going on, but as with all things, the cost far outweighs the rewards at this point. to shelve fossil fuel right now cold turkey would throw the entire world into a depression of unimaginable magnatude.