The overall goal of MacArthur Foundation's Climate Solutions program is to work to ensure that global temperature rise stays well below 2 degrees Celsius over pre-industrial levels. The working theory of change for the Climate Solution program is that the United States, India, and China must lead the world's efforts to address climate change. Each nation will have its own style, approach, advances and setbacks, and goals, though collectively they must ensure a steep decline in current and future greenhouse gas emissions within the next decade. If these three nations exert leadership on climate change, then other nations will be encouraged to follow suit, and humanity will be on a path toward ensuring global temperature rise stays well below 2 degrees Celsius. Leadership can come from government, the private sector, and civil society. It will be demonstrated through policies, actions, and investments by the United States, India, and China that decrease the carbon-intensity of their respective economies, reduce greenhouse gas emissions (e.g. carbon dioxide, methane, and hydrofluorocarbons), and build political will and public demand for climate solutions.
Beginning in 2016, Grassroots Solutions and M+R Strategic Services (the Foundation's evaluation and learning partner) partnered with the Climate Solutions program to evaluate its program.