en-us https://www.intensedebate.com/users/3709813 Comments by JimOkun http://www.wpri.com/dpp/news/massachusetts/fall-river-talbot-middle-school-reopens-after-pcb-concerns#IDComment199227484 As a point of clarification, there is no scientific evidence that PCBs cause cancer in people. There have been many long term followup studies of thousands of people that had occupational exposures to PCBs that were thousands of times greater than could occur in a school setting, and these studies show no increase in cancer rates. Mon, 26 Sep 2011 17:03:12 +0000 http://www.wpri.com/dpp/news/massachusetts/fall-river-talbot-middle-school-reopens-after-pcb-concerns#IDComment199227484