Can a person disappear in plain sight? That's the question Liu Bolin's remarkable work seems to ask. A Chinese artist made seven models disappear into the woods. Liu Bolin, known for his perfectly camouflaged body paintings, has created a chilling piece that voices his concerns about China's growing air pollution problem.

Known as the "Human Chameleon" for his specialty in camouflage, Liu has described his latest piece as "a reflection on Chinese people's current living situation." Last week, Beijing issued its second "red alert" ever for air pollution and schools closed amid the hazardous conditions. Over 2.5 million cars were taken off the road.