I came across this 8 video series on Youtube, and thought it would be a manageable bridge for those who are not keen to look at the reality of our situation on earth.
His presentation is a bit dry, (which may be a good thing), but his logic is hard to ignore.
He shows in detail, with lots of graphs and examples, how close to the end of a viable level of survivability we really are by now on earth.
He really pulls aside the curtain on how stupid the idea of exponential growth is in fact, and how close we are to the end of that illusion.
http://www.youtube.com/watch?v=F-QA2rkpBSY