Public policy is an academic discipline and field of study that focuses on the development, implementation, and evaluation of policies and programs that affect society as a whole. It involves analyzing and addressing pressing societal issues such as healthcare, education, environmental protection, social welfare, and national security. Public policy research seeks to understand the impact of different policies and interventions, as well as making recommendations for improving policy outcomes and public services. Researchers in this field often work closely with government agencies, non-profit organizations, and other stakeholders to inform and shape public decision-making processes.