Records relate to Maurice Strong's role as chairman of the Earth Council, a nongovernmental organization (NGO) established in the months following the 1992 United Nations Conference on Environment and Development (UNCED), also known as the Earth Summit, for which Strong served as the secretary-general. Records also relate to the World Bank Group's (WBG) engagement with the Earth Council and participation in Earth Council events.

Records relate to Rio +5, the 1997 United Nations General Assembly Special Session that reviewed progress made on the Earth Summit agreements. Many of these records relate to President Wolfensohn's attendance at and participation in the event. Other records relate to Strong's participation.

Other records in this series relate to Strong's attendance at and contribution to Earth Council meetings and events and to information sharing. Records include memos, reports, and informational brochures.