Growthbusters, that funny/serious video by Dave Gardner, is featuring the 40th anniversary of the publication of Limits to Growth. This book had a large effect on people when it came out, but its message seems to have been forgotten by all but a few. We live on a finite planet, yet our economic paradigm seems to assume limitless growth.
You can access a special webpage with a pledge to limit your growth and several essays on the subject. Go to: http://www.growthbusters.org/home/limits-to-growth/
Enjoy!