Examines the interlinked crises of energy and agriculture and highlights some startling findings, including the fact that studies suggest that without fossil-fu... » 

Examines the interlinked crises of energy and agriculture and highlights some startling findings, including the fact that studies suggest that without fossil-fuel based agriculture, the US could only sustain about two thirds of its present population. For the planet as a whole, the sustainable number is estimated to be about two billion. «