“Integrated assessment models (IAMs) are used to answer central questions about climate change, from how the world could avoid 1.5C of global warming at the lowest cost, through to the implications of countries’ current pledges to cut emissions. They combine different strands of knowledge to explore how human development and societal choices interact with and affect the natural world. This includes the physical laws driving natural systems, as well as the changing habits and preferences that drive human society.” This session focuses on solutions IAMs reveal that lead to the economic transformation necessary to optimally address the urgency of climate change. These are solutions that might be implemented if most engineers, 97% of climate scientists, and 3,500 economists had their way.