We are running a collective chemical fever that we cannot break. Everyone everywhere now carries a dizzying array of chemical contaminants, the by-products of modern industry and innovation, that contribute to a host of developmental deficits and health problems in ways just now being understood. These toxic substances, unknown to our grandparents, accumulate in our fat, bones, blood, and organs as a consequence of womb-to-tomb exposure to industrial substances as common as the products that contain them. Almost everything we encounter--from soap to soup cans, computers to...