Dr. Allan Ropper speaks with residents and fellows as they do rounds at the neuroscience intensive care unit at Brigham and Women's Hospital in Boston. M. Scott Brauer for NPR hide caption

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Wouldn't this salad make a healthful addition to your pizza for dinner? iStockphoto hide caption

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Proton beam therapy can precisely target tumors to avoid harming surrounding tissue, advocates say. Blythe Bernhard/St. Louis Post-Dispatch/MCT/Landov hide caption

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Justin McCowan poses for a portrait outside of his house in Santa Monica, Calif., on Aug. 14. Benjamin B. Morris for NPR hide caption

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Low water levels, like at this reservoir near Gustine, Calif., bring birds and mosquitoes together and help transmit West Nile virus to humans. Rich Pedroncelli/AP hide caption

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Rob Donnelly for NPR

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