Climate change will affect all four dimensions of food security: food availability, food accessibility, food utilization and food systems stability. It will have an impact on human health, livelihood assets, food production and distribution channels, as well as changing purchasing power and market flows. This document provides background information on the interrelationship between climate change and food security, and ways to deal with the new threat. It also shows the opportunities for the agriculture sector to adapt, as well as describing how it can contribute to mitigating the climate challenge. This paper takes a broader view and explores the multiple effects that global warming and climate change could have on food systems and food security. It also suggests strategies for mitigating and adapting to climate change in several key policy domains of importance for food security.