Gregory C. Carr is an American entrepreneur and philanthropist. From 1996 to 1998 he was chair of Prodigy, an early global Internet service provider (ISP). He also co-founded Africa Online in 1996 and served as its chair until 1998. In 1998 Carr resigned from his for-profit boards and dedicated himself to humanitarian activities. He formed the Carr Center for Human Rights Policy at Harvard University in 1999. Through research and teaching, the Carr Center seeks to make human rights principles central to the formulation of good public policy in the United States and throughout the world.

In 1999 he also founded the Gregory C. Carr Foundation, a non-profit organization through which he has been involved in various projects including the Gorongosa Restoration Project. The Carr Foundation is currently committed to the 20 year restoration of Gorongosa National Park in central Mozambique as well as to the sustainable development of the communities surrounding the park. The Gorongosa team has reintroduced species to the ecosystem, planted more than three million trees in the Mt. Gorongosa rainforest, created an international Restoration Ecology science research center, established eco-tourism in the Park, and provides health and education programs to the local communities living near the Park's borders. National Geographic Television chronicled the Park's restoration in their film "Africa's Lost Eden.”

Carr sits on the Board of Directors of the E.O. Wilson Biodiversity Foundation.

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