U.S. health officials say they'll urge foodmakers to phase out petroleum-based artificial colors in the nation’s food supply.

U.S. health agencies announced that the food industry will begin "phasing out" eight artificial food dyes in the coming years.

Some have quit in frustration. The leading nutrition scientist at the N.I.H., Kevin Hall, recently resigned, saying he was being censored. Jim Jones, the chief of the F.D.A.’s food division, quit last month, saying “indiscriminate” layoffs would make it “fruitless” for him to continue.