I read "The Limits to Growth" over the weekend. What a wakeup call, which is pretty impressive considering this is from 50 years ago!
This is a model of the "Standard Run" from the book. Note the exponential dropoff of resources as we continue to increase our consumption of a finite resource. If we don't change our approach, the world will change it for us... very rapidly, and very painfully.
Great book, if you're considering reading it. Plainspoken, clear, impactful, and short.