“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.
Treehugger Asks Janet Larsen About Scarcest Resources
April 17, 2012
Treehugger asks Janet Larsen "What's the greatest resource scarcity we now face?"