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Scientists say they're close to producing new "super varieties" of wheat that will resist a virulent fungus while boosting yields up to 15 percent, potentially easing a deadly threat to the world's food supply.

Drug-resistant strains of Staphylococcus aureus, a bacteria linked to a wide range of human diseases, are present in meat and poultry from U.S. grocery stores at unexpectedly high rates, according to a nationwide study by the Translational Genomics Research Institute (TGen).