Toxic chemicals prompt N.C. State to close academic building

N.C. State University officials unexpectedly closed Poe Hall Friday after toxic polychlorinated biphenyls (PCBs) were found inside the academic building. WRAL 5 On Your Side Producer Pritchard Strong explains what was found and who might be most affected by exposure to the cancer-causing chemicals. He reveals concerns dating back years from faculty and staff who worked in the building.