Study links petrochemical plants in Louisiana to premature and low-weight births

About a fifth of America’s petrochemical production is concentrated on a stretch of land along the Mississippi River in southeastern Louisiana. That production comes with serious risks. The area has been known as ‘Cancer Alley’ because of the high rates of cancer among people who live nearby. A new study now shows how those risks may fall on the next generation as well. William Brangham reports.

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