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Neil Johnson, a University of Miami physicist, developed this mathematical formula to predict insurgent attacks in war zones. Courtesy of Neil Johnson hide caption

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Courtesy of Neil Johnson

Math Can Predict Insurgent Attacks, Physicist Says

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Autism Risks: Genes May Not Play Biggest Role

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Science/AAAS

Shining Light (Literally) On The Workings Of Cells

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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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AP

As warming temperatures drive polar bears south, they're starting to mix with brown bears much the way they did thousands of years ago. iStockphoto.com hide caption

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iStockphoto.com

Today's Polar Bears Trace Ancestry To ... Ireland?

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Kittiwake young ingest food regurgitated by their parents. USGS hide caption

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USGS

The Kittiwake: Winging It, Survival-Wise

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