At the Earth Policy Institute, we watch a number of indicators, including global food prices, hunger rates, and the number of failing states around the world, to get a sense of how close to the edge our civilization might be. This slideshow presentation, based on Lester Brown’s latest book, World on the Edge: How to Prevent Environmental and Economic Collapse, explains the threats facing our civilization and how we got to this point. It also presents a plan for how to get out of this dangerous situation and highlights the progress being made.