“4.0 is the best yet! If there are planetary heroes, you are top of my list.” –David Orr, Oberlin College on Plan B 4.0: Mobilizing to Save Civilization.
The Race Between Tipping Points: Can We Save Our Civilization? - Mother Earth News
January 20, 2010
Article by Lester Brown in Mother Earth News, titled "The Race Between Tipping Points: Can We Save Our Civilization?" Posted January 20, 2010.