"A Fresh Take on the World Food Problem" New York Times

http://green.blogs.nytimes.com/2012/01/30/a-fresh-take-on-the-world-food-problem/

 “As world population grows, meat consumption increases the demand for feed, and industrial biofuel production expands, there is concern that demand will outstrip supply by 2050 unless concerted action is taken to address the underlying problems.”