This dissertation examines topics related to development, environment and health in developing countries using empirical methods. In the first chapter, I study how developing countries can increase enforcement to reduce subsidy leakage in public programs, by investing in the state capacity to target program beneficiaries. This chapter further attempts to understand how the formal sector and black market respond to a policy that reduces diversion of a subsidized commodity. I explore these questions using the case of a Unique ID-based direct fuel subsidy transfer policy in India. Second chapter focuses on the health and wealth trade off near mineral mining operations in developing countries. Using extensive data on mining, health outcomes ...