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“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.
‘Population Matters: Living on the Edge,’ The Population InstituteJanuary 19, 2011
Robert J. Walker, Executive Vice President of the Population Institute posts a blog about World on the Edge: How to Prevent Environmental and Economic Collapse, titled 'Living on the Edge.' Posted January 19, 2011.
