Consumer and environmental groups say that the chains, with 2,000 stores, have pledged not to sell a fish genetically engineered to grow faster.

A new study of fish bought and genetically tested in 12 metropolitan areas in the United States found that about one-third of the samples were mislabeled.

The proposed rules represent a change in the way the agency polices food, a process that currently involves swinging into action after food contamination has been identified.

Oceana, an international ocean-protection group, found that 39 percent of the 142 samples of seafood they tested in New York were mislabeled.

As consumption of energy drinks soars in the United States, critics say the Food and Drug Administration has allowed the drinks to languish in a regulatory gray area.

The widely used drug Celebrex was defended by Pfizer and its original maker, but doubts were played down. A long-term study of the drug is scheduled to be completed in 2014, just as its patent protection expires.

Del Monte Fresh Produce has accused federal and state regulators of bullying and overreaching in a case involving contaminated melons.

Despite a link to hyperactivity in some children, artificial dyes save us from unappetizing grays.

Studies suggest a link between food dyes and hyperactivity in children.

American consumers who want to avoid genetically modified foods should not have to resort to guesswork.