Saroo Brierly was separated from his family in 1986 when he fell asleep on a train in his home country of India and ended up in Calcutta. With no way to return home or contact his parents, the then-five-year-old Brierly ended up on the streets. He was eventually adopted by an Australian family.
Now Brierly, who related his life story to the BBC, has managed to find his long-lost mother with the help of Google Earth. He managed to calculate the rough distance he had traveled 25 years earlier to reach Calcutta and looked at images from towns and villages in that radius. Pictures of the village of Khandwa stirred childhood memories, and Brierly eventually found his mother in the town.