National Institute of Allergy and Infectious Diseases Director Dr. Anthony Fauci said a voluntary halt to bird flu research should stay in effect. Chip Somodevilla/Getty Images hide caption

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The Ebola virus causes a deadly form of hemorrhagic fever. Frederick Murphy/CDC hide caption

itoggle caption Frederick Murphy/CDC

Drivers under 25 are more likely to send text messages and make calls behind the wheel. They're also less able to handle distractions while driving. iStockphoto.com hide caption

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This photo provided by the U.S. Attorney's Office in New Hampshire shows David Kwiatkowski, a former lab technician at an Exeter, N.H., hospital. AP Photo/U.S. Attorney's Office hide caption

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CamelBak-brand water bottles on display at an outdoor supply store in Arcadia, Calif., in 2008. The company removed BPA from the plastic in its bottles. David McNew/Getty Images hide caption

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A government official in Bali, Indonesia, holds a chicken before administering an injection to cull it as a precautionary measure in April to prevent the spread of bird flu. Firdia Lisnawati/AP hide caption

itoggle caption Firdia Lisnawati/AP

A cross-sectional X-ray shows what's called a "sunken chest." The bright circle near the bottom is the spine; the gray blob on the right is the heart. Living LLC/Getty Images hide caption

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When it comes to learning how to drive, your teen is probably as harried as you are. Research shows that scare tactics meant to instill caution, though, are less effective than kind words. iStockphoto.com hide caption

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The pharmacy at Atlanta's Ponce de Leon Center stocks medications for 5,200 HIV/AIDS patients. Workers there aren't sure how much an increase in federal aid will help cut Georgia's waiting list for a HIV drug-assistance program. Jim Burress/WABE, Atlanta hide caption

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Ruben Bermudez stands in front of a sign that says in Spanish, "To love yourself is to protect yourself." He has struggled to remain eligible for AIDS drug assistance programs since he went on treatment four years ago. Jessica Camille Aguirre/NPR hide caption

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"You've been condomized!" said Joy Lynn Alegarbes, of The Condom Project, which promoted safe sex at the 19th International AIDS Conference. The group handed out more than 850,000 condoms this week. Benjamin Morris/NPR hide caption

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