Mass media reaches a large and growing share of the population in developing countries, but can it be used to tackle poverty and change behaviors, such as the adoption of modern contraception? Given the low marginal costs of mass media campaigns, even small effects could be highly cost-effective. IPA partnered with researchers and Development Media International to evaluate the impact and cost-effectiveness of an intensive, 2.5-year mass media radio campaign in Burkina Faso that promoted family planning and aimed to dispel myths and misinformation about modern contraception.