World food.

[S A Croft]

It has been suggested to me that there are enough crop plants grown 
world-wide to feed the entire population of the Earth, and the only 
reason that food shortages occur are due to distribution problems.  
Does anyone know of a study or paper to back this idea up, or any 
suggestions for how long the current rate of food production 
could sustain an ever increasing population if these distribution 
problems were properly addressed?
Stuart Croft
Department of Molecular Biology and Biotechnology
University of Sheffield.