The 1992 Rio Summit was a major UN conference on the environment and sustainable development held in Rio de Janeiro, Brazil with over 170 country governments participating at high levels. It aimed to build on the previous 1972 Stockholm conference and address pressing environmental issues through cooperation between governments and thousands of non-governmental organizations in attendance.

2. RIO SUMMIT (3-14 JUNE 1992)
Host Government Brazil
Number of Governments participating 172, 108 at level of heads of State or Government
Conference Secretary-General Maurice F. Strong, Canada
Organizers UNCED secretariat
Principal themes Environment and sustainable development
NGO presence Some 2,400 representatives of non-governmental
organizations (NGOs),
17,000 people attended the parallel NGO Forum
Previous conference
UN Conference on the Human Environment,
Stockholm (1972)