The United Nations Conference on Environment and Development (UNCED), also known as the Earth Summit, was a major UN conference held in Rio de Janeiro in 1992. Over 105 nations gathered and discussed issues of sustainable development, the environment, and the relationship between economics and the environment. Key agreements from the conference included the Convention on Biological Diversity, the United Nations Framework Convention on Climate Change, and the United Nations Convention to Combat Desertification. The conference concluded with nations demonstrating their commitment to addressing these global environmental challenges through sustainable development.