Turkey on Tuesday holds pre-dawn vigils for the loss of more than 50,000 people -- and parts of entire cities -- in the earthquake-prone country's deadliest disaster of modern times. Grieving Turks are still coming to terms with how a 7.8-magnitude tremor could upturn the lives of millions of people in a matter of seconds while they were still asleep. An updated toll released Friday showed that 53,537 people had died across 11 southeastern provinces officially designated as the disaster zone.