A girl neatens clothes for a jackstraw at the Tianjin Youth and Children's Center in Tianjin, north China, May 29, 2011. Children made a variety of robots, dolls and castles with waste materials during an environmental protection activity held at the center on Sunday. (Xinhua/Liu Dongyue)
Children visit waste material-made cartoon fairyland at the Tianjin Youth and Children's Center in Tianjin, north China, May 29, 2011. Children made a variety of robots, dolls and castles with waste materials during an environmental protection activity held at the center on Sunday. (Xinhua/Liu Dongyue)
Children color a paper castle at the Tianjin Youth and Children's Center in Tianjin, north China, May 29, 2011. Children made a variety of robots, dolls and castles with waste materials during an environmental protection activity held at the center on Sunday. (Xinhua/Liu Dongyue)