The number of world hungry has dropped to one in eight people,but undernourishment remains a significant problem in Sub Saharan Africa and Southern Asia,the UN's food agency said Tuesday.At the global level,842 million people 12 percent of the world's population -did not have enough food for an active and healthy life in the period 2011 to 2013,down from 868 million reported for the period 2010 to 2012.
