A new analysis of chemicals in U. S. infant formula found reassuringly low levels of heavy metals, pesticides and other potential contaminants, federal health officials said Wednesday. The review was conducted as part of the Food and Drug Administration’s Operation Stork Speed project — billed as the “largest and most rigorous” to date. It found that the infant formula supply is safe, agency officials and outside experts said. “There’s no reason not to use any available formula”...