. >> police and students in egypt clashed for a third day, students protesting in support of mohammed moresy. reports say dozens of students have been hurt and officials say officers fired tear gas to prevent students from taking protests outside of the campus. >> and this group received a peace prize in norway. the group received a diploma and a cash award of $1.2 million for efforts to eliminate chemical weapons in syria and around the world. lawrence livermore lab had a vested interest in the proceedings. it's one of two labs in the country analyzed to sample chemical warfare agents. >> general motors announced mary berra as its ceo. she's your honor currently the senior vice president of global product development. she's also in charge of purchasing and had headed the human resources operations. berra started adds an engineering co-op education student in 19806789 now risen to the top of the company. >>> a record breaking day for twitter. stock jumped 7% today. this comes in the face of skepticism by some analysts that twitter is overvalued the stock jumped 73% in november closing above