In a collaboration with The Bureau of Investigative Journalism in the United Kingdom and KQED in California, this episode of Reveal tells the stories of children crossing borders alone. You’ll hear about the wars they’re fleeing, where they’re trying to go and what happens to them when they get there.

We followed migrants who traveled from Afghanistan to Sweden to London, from El Salvador and Mexico to California, and we found that kids seeking safe harbor in Europe and the U.S. often confront years of uncertainty and insecurity when they arrive.