The Earth Policy Institute is a ‘think tank’ for sustainability, perhaps even survivability, of human civilization on planet earth.  The founder and president, Lester Brown, has been around for generations, developing his ideas and outreach, preaching, teaching, pushing and shoving from the sidelines (and the center) trying to get our system to embrace ecologically sustainable economic principles.His book  Plan B - 3.0 (available in paperback on the EPI website) is a thought provoking but practical plan for doing just that.  

Here is a link to the Table of Contents, for those considering buying it.  There are also bulk rates available for teachers and true-believers.