Berkeley anthropologist Nancy Scheper-Hughes, an international expert on organ trafficking, recently spent 10 days in the Vatican, at a plenary on human trafficking convened by Pope Francis. During an audience with the bishop of Rome she delivered a Golden Bear pin from Chancellor Dirks and received white papal rosary beads to deliver in return.

Mass shootings at the hands of unhinged loners -- as in Aurora, Colorado and Newtown, Connecticut -- foster the widely held belief that mental illness triggers violent crimes. But hallucinations and delusions seldom foreshadow acts of aggression, according to a painstaking review of 305 tragic incidents. 

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