The pollution ... to the air we breathe. Yet in the hands of some artists, smog, landfill and sewage have become beautiful, witty and challenging statements. In Art of Now: Filth, Emma Critchley ...

Artist Liu Bolin, known as the "Human Chameleon" for making people completely blend into their surroundings, did it to show the urgency of China's air pollution problem. For his latest project ...