The Darién Gap is a roadless stretch of treacherous jungle that connects Panama and Colombia. It is increasingly crowded with migrants who are risking their lives to make it to the United States."People will go to great extents to improve their lives or get away from danger. Even the greatest natural deterrents in the world won't stop them from seeking a better life," says Migration Policy Institute's Andrew Selee.We discuss what it's like to trek through the Darien Gap and why so many more migrants choosing to make the perilous, week-long journey.Want to support 1A? Give to your local public radio station and subscribe to this podcast. Have questions? Find us on Twitter @1A.