Mass media has enormous potential to drive healthy behavior at a low cost. Development Media International (DMI) produces intensive radio, TV and mobile campaigns to change key health behaviors – things like exclusive breastfeeding, practicing family planning, and, surprisingly, going to the clinic when sick. Their simple, engaging content is broadcast by media partners at sufficient frequency and duration to change behavior and save lives. Their creative approach to content and a rigorous approach to the design, delivery, and evaluation of national media campaigns has made them the leader in the space.