The purpose of BEST Futures is to support the emergence of a sustainable and just world through providing people and communities with new tools, perspectives, and knowledge. We use evolutionary systems theory to understand and model the historical (past and probable future) evolution of societal systems and worldviews, and to define the design requirements of sustainable solutions, including the parameters of viable environmental, economic, cultural and technological paths to the future. Our goal is help develop a coherent, viable vision of a sustainable future and seed transformative cultural meta-narratives, memes and processes.