The death toll from a powerful earthquake that devastated southern Turkey and neighboring Syria surpassed 21,000 on Thursday, according to figures from the two countries.Conditions are becoming increasingly difficult for rescuers, who are racing against time and searching in the bitter cold for survivors trapped under rubble after Monday's temblor.The United Nations on Thursday brought aid supplies to the northwestern Syrian province of Idlib through the Turkish border.The province remains under the control of forces opposed to President Bashar al-Assad's government. There have been concern…READ FULL ARTICLE