This chapter focuses on hunger and famine. Chronic hunger, famine, and malnutrition are related concepts with different causes. Multiple forms of malnutrition coexisting in most countries require governing bodies to carefully design policies which consider linkages among different types of malnutrition. While 'food security' is still a popular framework to guide the interventions of development agencies and governments, other concepts help us to focus on different underlying causes of hunger. The Green Revolution helped increase global food security in some respects but made many populations more vulnerable. Meanwhile, the entitlement approach helped clarify the cause of famine in some circumstances, but recent famines are mostly a consequence of war and the choices made by governments. Famine mortality has declined dramatically, in large part because of better monitoring and more effective humanitarian assistance. However, acute hunger remains a massive problem.