The John D. and Catherine T. MacArthur Foundation is a private, non-profit organization that supports creative people, effective institutions, and influential networks building a more just, verdant, and peaceful world. The foundation was established in 1978 and is headquartered in Chicago, Illinois. MacArthur's grantmaking focuses on four areas: justice reform, climate solutions, nuclear risk, and technology and democracy. The foundation also supports the MacArthur Fellows Program, which awards unrestricted fellowships to individuals who have shown exceptional creativity in their work and the potential for significant future advances.