To conduct the study, Fredrica Pereta, a professor at New York Columbia University’s Mailman School of Public Health, and her team measured levels of polycyclic aromatic hydrocarbons (a component of air pollution) in the umbilical cord blood of 250 expectant mothers. They examined their children at age 9, taking PAH exposure into account.
Just over one-third of these kids had high prenatal PAH exposure, and that group was five…
