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Science  10 Jul 2009:
Vol. 325, Issue 5937, pp. 133
DOI: 10.1126/science.325_133

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Highlights from Science's online daily news site, ScienceNOW, this week include a way to guess a person's Social Security number, a fossil that may replace Ida as the "missing link," an average black hole, and a fossil that shows how the piranha got its teeth.