Students perform martial arts,Nanjing, Jiangsu province. 學生表演武術，南京，江蘇省。

REUTERS/Sean Yong
says the UN, gaps between rich and poor are widening and more people than ever are vulnerable to food insecurity and water shortages.
Photos of the Day, Oct. 20, 2011 | News | National Post
http://news.nationalpost.com/2011/10/20/photos-of-the-day-oct-20-2011/