Time could be running out for missing Argentine sub; flares reported

By Walter BianchiMAR DEL PLATA, Argentina (Reuters) - Authorities were investigating white flares spotted in the South Atlantic overnight, as urgency grew on Tuesday in the search for a missing Argentine navy submarine amid worry that its 44 crew members could be running out of oxygen.Searchers found an empty raft floating in the ocean, and noticed white flares from a distance.