The document outlines the collaborative efforts of the U.S. government and the UNFCCC to build greenhouse gas (GHG) inventory management capacity in developing countries. It discusses the current challenges in data collection, institutional memory, and technical expertise and provides a structured approach to improving GHG inventory systems through templates and targeted data collection. Additionally, it emphasizes the importance of capacity building determined by the needs of developing countries rather than donors, and highlights past and ongoing projects in regions like Central America and Southeast Asia.