The teenagers who live underground: Ukraine invested billions in infrastructure projects for the 2012 European football championships. But while the fans enjoyed the facilities, most of them didn't know that living around them - and beneath their feet - were young homeless people left on their own to survive dangerous, subterranean lives. Marcel Theroux went to Kiev to meet the children in 2012. This episode first aired on 18/05/2012. Subscribe to our channel for more Unreported World episodes null.