In June, 1992, more than 100 heads of state and 20,000 non-governmental representatives gathered in Rio de Janeiro for the United Nations Conference on Environment and Development (UNCED). It resulted in the adoption of Agenda 21, an ambitious 500-page blueprint for sustainable development. In addition, Rio produced treaties on climate and biological diversity, both of which could lead to domestic policy changes in all nations. Significantly, the conference pointed to the need for a global partnership if sustainable development was to be achieved.
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