Like many women of her generation, Sue was careful to get prenatal care and watch her weight gain as her doctor advised. In the early 1960s there were no warnings to avoid smoking or alcohol during pregnancy and no information about the potential hazards of environmental chemicals, either for Sue’s own health or the health of her baby. Now in 2012, new information suggests that some exposures that were not in Sue’s control, including some pesticides and industrial chemicals, may have affected her health and the health of her children. Nearly all persons in the U.S. were exposed through food...