As food prices spike again, aid agency warns cost of staples will double in 20 years June 7, 2011 By Oxfam Post Share Share As food prices spike again, aid agency warns cost of staples will double in 20 years http://www.washingtonpost.com/world/as-food-prices-spike-again-aid-agency-warns-cost-of-staples-will-double-in-20-years/2011/05/31/AGOkoKFH_story.html