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Mexico knows how to fight infectious diseases. Tackling a chronic condition like diabetes is a new — and daunting — challenge.

Monica Witt has been indicted after allegedly providing classified Pentagon information to Tehran. She defected almost six years ago, the Justice Department says.

The U.S. Preventive Services Task Force says people at high risk of being infected with HIV should be offered a daily pill containing antiretroviral medications. The drug's cost remains a hurdle.

NPR's Lulu Garcia-Navarro talks to Sahana Srinivasan, host of the new children's television series Brainchild, about making science relatable.

While the reopening of the government is welcome news for many federal workers, some express trepidation that they'll face the same predicament after Feb. 15.