First Lady Michelle Obama, accompanied by Darden chef Julie Elkinton, talks to Charisse McElroy, right, and her daughter Jacqueline McElroy, 9, during an event at Olive Garden in Hyattsville, Md. on Thursday. Manuel Balce Ceneta/AP hide caption

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Phosphates and bitters, a mixture of herbs steeped in alcohol, are part of the revival of old-timey soda fountain drinks at places like PS7's in Washington, D.C. Maggie Starbard/NPR hide caption

itoggle caption Maggie Starbard/NPR

Researchers have found that when bottles of sanitizer and wipes were kept around schools and students were cued to use them, they ended up missing significantly fewer days due to stomach bugs. / hide caption

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A truckload of live turkeys arrives at the Cargill plant in Springdale, Ark., on Aug. 4. Most turkeys in the U.S. are given low doses of antibiotics, which breed resistant strains of bacteria, including Salmonella. Danny Johnston/AP hide caption

itoggle caption Danny Johnston/AP