A Harvard study found dramatically higher BPA exposure in people who ate canned soup. The researchers used different varieties of Progresso-brand vegetable soups, but BPA is found in the epoxy resins used to coat the inside of many food and beverage cans. Maggie Starbard/NPR hide caption

itoggle caption Maggie Starbard/NPR

The most common cause of brain injury in premature infants is a lack of oxygen in the days and weeks after birth, researchers say. Ibrahim Usta/AP hide caption

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Red wine's rep as a fountain of youth is facing a challenge. iStockphoto.com hide caption

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A healthy gypsy moth caterpillar on a leaf. Outbreaks of gypsy moths damage roughly 1 million acres of forest in the U.S. each year. Michael Grove/Science/AAAS hide caption

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The brain "seems to be specialized in alerting us to things that are emotionally important to us — either positive or because they're scary," a scientist says. iStockphoto.com hide caption

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A convoy of Walmart trucks waited to enter New Orleans on Sept. 1, 2005, after the city was battered by Hurricane Katrina. Government agencies said the massive storm taught them that big-box retailers need to be an integral part of hurricane preparation and relief efforts. Nicholas Kamm/AFP/Getty Images hide caption

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This image shows the above-normal water temperature in the Pacific Ocean during the December 1997 El Nino. Green-blue colors represent normal temperatures; dark red indicates hotter water. NOAA hide caption

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The P-3B NASA research aircraft, seen on the tarmac at Baltimore Washington International Airport on June 28, will gather data as it flies spirals over six ground stations in Maryland. Paul E. Alers/NASA hide caption

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This undated X-ray image from the Cleveland Clinic shows electrodes implanted in a patient's brain. The method, known as deep brain stimulation, has traditionally been used to treat diseases such as Parkinson's, but new research indicates it could be helpful for patients with obsessive-compulsive disorder. AP hide caption

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Dr. Donald Brown, left, gives 14-year-old Kelly Kent a dose of Gardasil, a vaccine for the human papillomavirus in 2006. The group that advises the U.S. government on vaccination recommendations is now starting to take costs for vaccines like Gardasil into consideration as vaccine prices rise. Charles Rex Arbogast/AP hide caption

itoggle caption Charles Rex Arbogast/AP