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  • The hearts of bluefin tuna, some of the largest fish in the ocean, are vulnerable to spilled crude oil. | Science/AAAS CHICAGO -- New research on tuna shows why the toxic compounds from an oil spill such as the 2010 Deepwater Horizon disaster are damaging to fish hearts. The study , published in...
  • A new study helps explain why taking antioxidants may accelerate the growth of early tumors or precancerous lesions in high-risk populations, like smokers. The findings published in the 29 January issue of Science Translational Medicine are mostly from experiments in mice, and further studies in...
  • New data from NASA's Opportunity rover suggests that mild, pH neutral water — the kind that may have supported microbial life — flowed on Mars before the giant impact crater known as Endeavor formed between 4.1 and 3.7 billion years ago. Until now, Opportunity ("Oppy," as the rover has...
  • Isaac Larsen and colleagues went to extremes to collect the samples for this study, from hiking steep cliffs to swinging across rivers in a cable-drawn metal basket. With almost no roads or trails in the region, the team relied on helicopters for transportation. Scientists working in some of the...
  • Science Editor-in-Chief Marcia McNutt was honored to meet with Chinese Premier Li Keqiang on 13 January in Beijing to discuss international scientific cooperation and the importance of science and technology to economic growth. The 70-minute meeting was covered by China's largest television channel...
  • Bacteria are the key to turning free-swimming tubeworm larvae into sedentary juveniles, which collect on ship hulls and ocean drilling rigs. | Science/AAAS Before some bottom-dwelling marine organisms like the Hydroides elegans tubeworm can make their messy homes on the hulls of ships, they have to...
  • A new report shows that extending Medicaid to low-income individuals can increase the number of trips they take to the emergency room — a costly service that many proponents of expanded Medicaid said would be used less often. The study by Sarah Taubman of the National Bureau of Economic Research...