ALL POSTS TAGGED WITH schools
07/04/2017 / By Russel Davis

A recent study published in Environmental Science & Technology revealed that concentrations of airborne polychlorinated biphenyls (PCBs) may persist in schools and

http://www.toxins.news/2017-07-04-public-schools-found-to-be-toxic-tombs-of-pcbs-being-inhaled-by-students.html