Sarah Handel

Some Senegalese manteros spend years selling goods on the streets of Madrid and trying to avoid harassment from police as they wait for visas and work documents.

Mamadou Niang has decided he has no choice but to leave his native Senegal. Salinization has made it impossible to farm his family's land.

While conducting research at the Auschwitz-Birkenau Memorial and Museum, a music theory professor discovered manuscripts of music that haven't been heard since World War II.

The Texas-born, Hawaii-raised musician has toured with Neil Young and his father, outlaw poet Willie Nelson. The new, self-titled album from his band, Lukas Nelson and Promise of the Real, is out now.

The documentary discusses Link Wray, Jimi Hendrix and other Native American artists who helped shape rock's sound. Guitarist and executive producer Stevie Salas says it's "a film about heroes."

Dr. Kurt Newman has spent his career caring for children. In a new book, he argues that children are not just smaller adults, and the differences matter for their treatment.

Also this week: How classic video games are teaching computers to learn.