Over the course of 25 years, folk rock icons the Indigo Girls have not only released more than a dozen albums, they have also displayed a staunch dedication to countless social, political and environmental issues, melding music and activism in their own, unique way. Alison Prato talks with band member Amy Ray about how they fight for what they believe in without seeming preachy, the evolution of their music, and the state of women around the world.