For Ana Tijoux, music is a powerful form of protest. The French-Chilean hip-hop artist's songs are a mix of arts and activism, reflecting central issues from the Latin American political left. Listen to her lyrics and you'll hear about feminism, class struggle, indigenous pride, the fight against neoliberalism, and more. So what impact can protest music have on society?

"Schools as we know them now are obsolete". So says Sugata Mitra who believes the only thing children need in order to learn is a computer connected to the internet. He maintains that self-organised learning environments - or SOLEs, where children teach themselves and each other, are what's next for our classrooms. What do you think of this innovative, yet controversial, glimpse at the future of education?