— Ch. 1 · Origins And Evolution —
Sustainable Development Goals.
~6 min read · Ch. 1 of 6
In 1983, the United Nations created the World Commission on Environment and Development. This group later became known as the Brundtland Commission. They defined sustainable development as meeting present needs without compromising future generations. The commission released its report in 1987. It set a new tone for global environmental policy discussions.
The first UN Conference on Environment and Development took place in Rio de Janeiro in 1992. Also called the Earth Summit, this event produced Agenda 21. That document outlined a comprehensive plan for sustainable development. It marked the first major international agreement on these issues.
A follow-up conference occurred twenty years later in 2012. Known as Rio+20, it aimed to review progress since 1992. Colombia proposed the idea of Sustainable Development Goals at a preparation event held in Indonesia in July 2011. The United Nations Department of Public Information picked up the idea at an NGO conference in Bonn, Germany, that September.
The UN General Assembly Open Working Group established itself in January 2013. This thirty-member body worked to identify specific goals. They submitted their proposal of eight SDGs and 169 targets to the General Assembly in September 2014. On the 5th of December 2014, the UN accepted the Secretary-General's Synthesis Report.
On the 25th of September 2015, the UN General Assembly adopted the 2030 Agenda. This resolution created seventeen Sustainable Development Goals. The agenda included ninety-two paragraphs outlining global priorities. It formally articulated the framework that would guide international cooperation until 2030.
Framework Structure
A UN resolution published in July 2017 detailed the structure of the goals. Each goal typically contains between eight and twelve targets. Targets serve as outcome measures or means of implementation. Outcome targets use numbers while means of implementation targets use lower case letters like 6.a or 6.b.
Each target has between one and four indicators used to measure progress. The average number of indicators per target is 1.5. As of 2025, there are 234 official indicators in use globally. These indicators monitor quantifiable changes in proportion, rate, amount, and other metrics.
Sixty-two percent of targets are supported by sole indicators. This effectively equates progress measured on 105 indicators with progress on 105 targets. National governments use these tools to track their own progress toward sustainable development.
The United Nations Statistics Division maintains an official indicator list. It includes all updates up to the 51st session of the Statistical Commission held in March 2020. Some indicators called Tier 3 had no internationally established methodology initially. Later adjustments replaced or refined these problematic metrics.
Statisticians developed the framework behind closed doors after goals were established. They received instructions from their respective governments. Powerful nations influenced the selection process significantly. Scholars note that political interests shaped which data points became central to global monitoring.