Why has it taken so long for this to come to public attention? I hadn't heard anything about it until about 2 months ago when my friend bought a BPA free Nalgen

Why has it taken so long for this to come to public attention? I hadn't heard anything about it until about 2 months ago when my friend bought a BPA free Nalgene, and then recently with that CBC documentary Alex3917 posted (http://news.ycombinator.com/item?id=375127 http://news.ycombinator.com/item?id=375127). On another note, I like that I'm able to find out about this stuff from HN. I consider it a triumph of social media.