Lebanese rescue workers searching through rubble in a residential area after a huge Beirut port explosion on Aug. 4 have detected signs of life under the masonry, a rescue worker said on Thursday. 'These (signs of breathing and pulse) along with the temperature sensor means there is a possibility of life,' rescue worker Eddy Bitar told reporters. He was speaking after the state news agency reported that a team with a rescue dog had detected movement under a collapsed building in the Gemmayze area of Beirut, one of the worst hit by the blast.