A Call For More Research On Cancer’s Environmental Triggers

A stretch of the Mississippi River from New Orleans to Baton Rouge, La., that is crowded with chemical plants has been called "Cancer Alley" because of the health problems there.

Scientists are making progress in identifying environmental hazards that contribute to cancer. Researchers say many cases could be avoided if the work is accelerated.

(Image credit: Giles Clarke/Getty Images)

Elaine Schattner