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 European hornet, or vespa crabro, helps make wine by kickstarting the fermentation process while the grapes are still on the vine. Otto Hahn/Getty Images/Picture Press RM hide caption
The NuSTAR telescope, seen in this artist's illustration, will soon be sending back data that researchers will use to study black holes. NASA/JPL-Caltech hide caption
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
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
Timothy Ray Brown, shown in May 2011 with his dog Jack in San Francisco, is the only man ever known to have been fully cured from AIDS. Brown is known as the "Berlin patient" because he had a bone marrow transplant in a German hospital five years ago. Eric Risberg/AP hide caption
Watermelon with seeds is getting harder to find at the supermarket. iStockphoto.com hide caption