China's environmental challenges. Beijing's marathon run to clean foul air nears finish line.
Stone
Richard
R
D000393:Air Pollutants / Q000032:analysis; D000397:Air Pollution / Q000517:prevention & control; D002681:China; D002947:Cities; D006801:Humans; D052638:Particulate Matter / Q000032:analysis; D011158:Population Growth; D011634:Public Health; D013177:Sports
D000393:Air Pollutants; D052638:Particulate Matter