By DOMINIQUE BROWNING
SUDDENLY, there’s a baby boom going on around me. I’m making weekly shopping trips to stock friends’ nurseries, and I’m struck by how many signs on the shelves advertise BPA-free bottles, BPA-free sippy cups. It breaks my heart. Manufacturers might be removing BPA, a chemical used to harden certain plastics, from their products, but they are substituting chemicals that may be just as dangerous, if not more so.