"Eliminating water shortages depends on a global attempt to raise water productivity similar to the effort launched a half-century ago to raise land productivity, an initiative that has nearly tripled the world grain yield per hectare." –Lester R. Brown, World Facing Huge New Challenge on Food Front in Plan B 3.0: Mobilizing to Save Civilization
Geoffrey Lean's article 'One poor harvest away from chaos' in the The Telegraph cites Lester Brown: "the world is only one poor harvest away from chaos. We are so close to the edge that politically destabilising food prices could come at any time." Posted January 12, 2011.