Arizona PBS July 13, 2021 Three wooden crosses mark the location where the remains of a family were found near Arivaca in April. They were among a record-setting 127 migrant remains recovered in the Arizona desert in the first six months of this year. (File photo by Grace Oldham/Cronkite Borderlands Project) Remains recovered in the desert are itemized in the Pima County Medical Examiner’s Office in Tucson, where many are marked “unidentified.” Medical examiners cannot always determine a cause of death, but said it is often attributed to exposure. (File photo by Raphael Romero Ruiz/Cron...