facebook s entire statement is i to testify before the senate congress committee tomorrow where she will tell senators they need to better regulate facebook. norah. o donnell: interesting new details, kris van cleave, thank you. tonight we re learning what might have caused an offshore oil pipeline to rupture unleashing a environmental disaster along the southern california coast. more than # 125,000 gallons of crude oil leaked into the pacific. animals are dying and world famous beaches could be closed for months. cbs s lilia luciano is there. reporter: operators of the line believe they found the source of leak as still state and federal agencies deployed more than 100 people in an all-out effort to stop the spiel from spoiling california s most pries beaches. tonight one early theory is a pipeline may have been punctured by a passing ship. is there a suspicion the leak causenc