The Sustainability Science Program has been led by co-directors Bill Clark, Henry Lee, Michael Kremer (through August 2015), and Nancy Dickson (through August 2016); a Steering Group; current Initiative Leaders; and an Advisory Group from across the University. A group of more than 50 faculty affiliates from six Harvard schools and faculties have either have received a grant from the program or hosted a fellow. The biographies and research abstracts of current research fellows and an overview of alumni fellows are available. The program also hosts student affiliates. The program is supported by a core staff. Some of the key collaborators outside of Harvard are also listed.