Do you believe time travel is possible? That it's possible for people from the future can slip back into our time either on purpose or by accident? This week we bring you two stores of people who did just that. A man hands over his travel documents at a busy international airport only to be told his country doesn't exist. And another man in the early 2000s who started posting on message boards that he was from the near future. Nobody believed him, until his predictions started coming true.