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Science  21 May 2010:
Vol. 328, Issue 5981, pp. 960
DOI: 10.1126/science.328.5981.960-a

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ScienceNOW reported this week that people tend to be happier, less anxious, and less worried after age 50; urinary proteins secreted by cats, snakes, and a variety of other predators make mice run scared; vision cells help set the body's clock; and brain cells thought to underlie our ability to understand one another work just fine in people with autism spectrum disorders; among other stories.