The CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS) brings together the world’s best researchers in agricultural science, development research, climate science and Earth System science, to identify and address the most important interactions, synergies and trade-offs between climate change, agriculture and food security. CCAFS is led by the International Center for Tropical Agriculture (CIAT), now part of the Alliance of Bioversity International and CIAT.