Linfen, China is the most polluted city on earth. According to Mother Nature Network, if one puts laundry out to dry, it will turn black before finishing drying. Located in China's coal belt, spending one day in Linfen is equivalent to smoking three packs of cigarettes. 3 million people are affected by Linfen's coal and particulates pollution, which is residue from automobile and industrial emissions.

9 Of The Most Polluted Places In The World (PHOTOS)