Boston Calling

David Eubank, an American relief worker, decides to bring his whole family with him to Mosul. Also: Choi Seong-guk, a North Korean refugee, draws a popular online comic strip series about his defection; presenter Marco Werman joins the US Coast Guard on patrol; scientist Milo Nordyke remembers a time when the US government tried to use a nuclear bomb as a bulldozer; and Mexican-American musician Lila Downs dedicates her latest album to “dangerous’’ women. (Image: Smoke plumes billow in Mosul on July 10, 2017. Credit: Fadel Senna/AFP/Getty Images)