regions face: But the differing cultures, religions even social classes sometimes mask some of the human elements that make the heart-wrenching migration universal, according to The Chronicle Herald. Three new documentaries set to air this month on PBS hope to make this connection as part of the third season of Doc World, a PBS/WORLD Channel series focusing on international issues. Refugees in both regions face similar challenges they are often fleeing violence and political upheaval and share similar journeys in crossing heavily armed borders with no certain future. It begins Sunday with Sky and Ground, a full-length documentary about a large, extended Syrian-Kurdish family fleeing war-ravaged Aleppo for Germany. Los Comandos follows 16-year-old Mimi, a volunteer emergency medic in El Salvador, who is forced to leave the country after getting caught in the crosshairs of violent gangs. Following that film are two short documentaries set to air Sept. 16 examining the journeys of Central Americans. (www.immigrantscanada.com). As reported in the news.