My sister and I went to see the film Lion this week. It’s the true story of a five-year-old boy, Saroo, who is separated from his family at the Khandwa train station in India. He falls asleep in a train car and travels 1500km to land up in Calcutta where he survives for weeks on his own. Then by some miracle, he is adopted by an Australian couple and begins his new life in Tasmania. Twenty-five years later, the grown up Saroo starts having flashbacks about where he really comes from and embarks on a mission, with the help of Google Earth, to find his birth mother.