Radio Lab is an epic radio show... kind of like the science equivalent of This American Life... only way cooler.
This most recent episode talks about the vague topic "Lost & Found." They cover Developmental Topographical Disorientation, homing pigeons, and one last topic, that comes at the theme from an entirely unexpected direction. That last story had me crying my eyes out while driving on some errands today. It is worth an hour out of your day to have your mind expanded and your heart broken.