UNEP Executive Director Achim Steiner (C, rear) poses for photos with Chinese young painters in Nairobi, capital of Kenya, July 16, 2012. Some 20 young Chinese painters were awarded in special ceremony at UNEP Headquarters on Monday. These children are the winners of 5th Chinese Children's Painting Competition. More than 620,000 paintings and other artworks submitted by Chinese children to the fifth edition of competition.[Photo/Xinhua]