June 28 (UPI) -- A new study has found that concentrations of airborne polychlorinated biphenyls, or PCBs, inside schools could expose students to the compounds at higher levels than through diets.
Researchers at the University of Iowa who conducted the study, published June 28 in Environmental Science & Technology, tested the air inside and outside six schools, four of which are within 1.5 miles of two waterways serving major industries in the area.