An eight-year-old girl, living near a major road in the Jiangsu Province of Eastern China, has become the youngest person in China, and possibly in the world, to be diagnosed with lung cancer caused by pollution—the cause of her disease according to Chinese officials. And last month, the World Health Organization classified air pollution as a major human carcinogen.

We talked with C. Arden Pope, economics professor at Brigham Young University in Provo, Utah. His research into the effects of air pollution on human health and mortality has been instrumental in establishing federal air quality regulations. He begins by saying that lung cancer in children, all but unheard of worldwide, lands in uncharted research territory.

What do we know about childhood lung cancer in China and around the world?

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