"Attention has focused on oil insecurity, and rightly so, but it is not the same as food insecurity. An empty gas tank is one thing, an empty stomach another. And while there are substitutes for oil, there are none for food." –Lester R. Brown, Plan B 4.0: Mobilizing to Save Civilization.
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.