The report highlights the critical relationship between urban form and greenhouse gas (GHG) emissions, emphasizing that compact, walkable, and transit-oriented urban designs as advocated by New Urbanism are essential for reducing emissions. The report identifies sprawl and car-dependent development as major contributors to climate change due to high transportation-related emissions, as well as associated building forms, infrastructure, and behavioral influences. Strategies to address these challenges include integrating land use and transportation planning, promoting mixed-use development, and adopting urban design practices that support active transportation and reduced energy use in buildings. The study also introduces decision-support technologies to help planners and policymakers evaluate and implement low-carbon urban designs, underscoring the importance of holistic, interdisciplinary approaches to urban development in mitigating climate change.