And they seem to lurk everywhere: in pesticides, cosmetics, and especially plastic packaging ... the most well known is BPA, or Bisphenol A, which shows up in water bottles, cans, milk cartons ...

A 6 means it’s made from polystyrene. In the EU, plastics used for baby bottles and toys must be BPA free. However, the plastic linings of cans of food, and the common heat-sensitive receipt ...