The document discusses the Humidtropics program, which takes an integrated systems approach to agricultural research across several humid tropical regions. It outlines the program's theory of change, framework, flagship projects, site selection process, and collaboration with other CGIAR research programs. The program aims to enhance livelihoods and environmental sustainability through systems research, innovation, and partnerships in target regions including West Africa, East and Central Africa, Central America and the Caribbean, and the Central Mekong.