Film has become so pervasive in our society that we tend to take it for granted. From big screen blockbusters to intimate arthouse dramas and documentaries to home movies, we see these cinematic records of us and our world virtually everywhere we look. It’s a phenomenon that’s present globally, too, one that spans all seven continents. And, because these images have been committed to a fixed medium, we tend to assume that these records will be with us permanently. But will they? As writer-director Inés Toharia Terán’s compelling new documentary reveals, that’s not an assumption we should make –...