Cindy Crawford says polychlorinated biphenyls (PCBs) will cause her son not to reproduce. She hasn’t gone full-on Jenny McCarthy or anything, but there’s never been a single study to find PCBs in window caulk can be an endocrine disruptor. There haven’t been PCBs linked to reproductive issues at all, except in cases where animals in labs have been subjected to surfactants and gavage dosing of the stuff – the disreputable “spray and count” people in toxicology activism that real scientists ridicule. PCBs have been far more tested than the weird cosmetic products Cindy Crawford hawks in her infomercials. Read more.