Nature: Omid Kokabee, who has been imprisoned in Tehran since February 2011, was sentenced on Sunday to 10 years for alleged conspiracy. A graduate student in the physics department at the University of Texas at Austin, Kokabee was reported missing last year when he failed to return to Texas from a trip home to Iran over winter break. Although his friends maintain that no proof was presented at the trial, he was found guilty of “communicating with a hostile government” and “illegal earnings,” writes Michele Catanzaro for Nature. He plans to appeal the sentence.