More than 70 killed, 3,000 wounded in Beirut explosions

Read MoreMore than 70 people are dead and 3,000 are wounded after two explosions shook the city of Beirut, Lebanon. The death toll has been rising by the hour, as investigators try to determine the cause. Chris Livesay reports.More than 70 people are dead and 3,000 are wounded after two explosions shook the city of Beirut, Lebanon. The death toll has been rising by the hour, as investigators try to determine the cause. Chris Livesay reports.