Credit: Screenshot: LEGO / YouTube My seven-year-old is obsessed with anything non-fiction, whether it's reality shows about creating things with LEGO or books about shark attacks. To help nurture his interest in real life, I've started looking for documentaries to show him the world around us and keep his attention. Luckily, there are plenty out there to choose from—here are some of my favorites. Ghosts of the Abyss (2003) Given some of its content, you might have qualms about your children seeing the 1997 film Titanic. However, James Cameron still has you covered. He and one of the film's stars,...