United Nations Environment Programme

• 1. Introduction

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  The United Nations Environment Programme grew from a single question that divided the world in the early 1970s: does a nation too poor to feed its people have time to worry about the planet? The answer, it turned out, was not obvious. Developing countries were skeptical, and the argument that environmental protection was a luxury for the wealthy seemed hard to dismiss. What shifted the conversation was not a policy document or a vote, but the personal advocacy of one Canadian diplomat who persuaded skeptical governments that every nation, regardless of its stage of development, had a stake in what happened to the Earth. That persuasion led directly to a new kind of international institution, one headquartered not in Geneva or New York but in Nairobi, Kenya. How did UNEP get built? What has it actually accomplished? And what happens when the politics of the world's biggest problems press back against the institution tasked with solving them?

• 2. A Controversial Birth

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  Nairobi won the contest for UNEP's headquarters over the objections of developed countries, who preferred Geneva, where other UN offices already clustered. Mexico City, New Delhi, and Cairo all competed for the seat but eventually withdrew their bids to support Nairobi, making it the first international organization to be headquartered in what was then called the Global South. Many developing nations were not enthusiastic about creating a new environmental governance body at all, but they backed the effort as an act of solidarity with one another. The 1972 United Nations Conference on the Human Environment, held in Stockholm, was the event that made UNEP real. Delegates discussed pollution, marine life, resource protection, and environmental disasters. The conference produced the Stockholm Declaration and a mandate for a new institution. UNEP was formally established by General Assembly Resolution 2997, with a staff of 300 at launch, including 100 professionals across multiple disciplines, and a five-year fund of more than $100 million. The United States pledged $40 million of that total; the remaining sum came from 50 other nations.

• 3. The Man Behind the Idea

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  Maurice Strong was elected unanimously by the UN General Assembly in December 1972 to lead the new organization, making him UNEP's first executive director. He had already served as secretary-general of the Stockholm Conference that created UNEP, and he would later serve as secretary-general of the 1992 Earth Summit as well. Nigerian professor Adebayo Adedeji described Strong's approach directly: "Mr. Strong, through the sincerity of his advocacy, soon made it clear that all of us, irrespective of the stage of our development, have a large stake in the matter." Strong held the top post from 1972 to 1975. His successor, Mostafa Kamal Tolba, held the position for 17 years, from 1975 to 1992. Under Tolba's leadership, UNEP negotiated what became its most widely recognized achievement: the 1987 Montreal Protocol, the historic agreement to protect the ozone layer by limiting emissions of gases blamed for thinning it. In 2018, executive director Erik Solheim resigned following allegations that included spending an excessive number of days outside UNEP's Nairobi headquarters. Multiple donor countries responded by withdrawing or freezing their contributions, including the Netherlands, which withheld $8 million pending resolution of nepotism concerns. Sweden and Denmark also stopped funding. A spokesman for the Norwegian Institute of International Affairs described the funding freeze as probably unprecedented.

• 4. Agreements and Secretariats

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  UNEP does not only run its own programs; it houses the secretariats for some of the world's most consequential environmental treaties. These include the Convention on Biological Diversity, the Minamata Convention on Mercury, the Basel, Rotterdam and Stockholm Conventions, the Convention on Migratory Species, and the Convention on International Trade in Endangered Species of Wild Fauna and Flora, better known as CITES. In 1988, UNEP and the World Meteorological Organization together created the Intergovernmental Panel on Climate Change, the body that would go on to produce the definitive scientific assessments of global warming. UNEP also serves as an implementing agency for the Global Environment Facility and for the Multilateral Fund for the Implementation of the Montreal Protocol. Between 1974 and 1986, the organization produced more than 200 technical guidelines and manuals on topics ranging from forest and water management to pest control, pollution monitoring, and the relationship between chemical use and human health.

• 5. Oceans, Marshes, and Solar Power

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  Established in 1974, UNEP's Regional Seas Programme is the world's only legal programme specifically designed to protect oceans and seas at the regional level. More than 143 countries take part in 18 regional programmes, with 14 of those programmes anchored by legally binding international conventions such as the Helsinki Convention, the Oslo Dumping Convention, the Barcelona Convention, and the Bucharest Convention. The Mediterranean Action Plan, launched in 1975, was the first regional action plan to emerge from the programme. In 2001, UNEP drew international attention to the destruction of Iraq's Marshlands, releasing satellite images that showed 90 percent of the marsh area had been lost. A dedicated support programme for the environmental management of those marshlands began in 2004. On the energy side, UNEP sponsored solar loan programmes that helped 100,000 people in India finance solar power systems, with that success prompting similar projects in Tunisia, Morocco, Indonesia, and Mexico. The European Investment Bank and UNEP together created the Renewable Energy Performance Platform in 2015, backed initially by $67 million from the United Kingdom's International Climate Finance initiative. The platform set a five-year target of improving energy access for at least two million people across Sub-Saharan Africa, and has invested around $45 million in renewable projects across 13 countries in that region.

• 6. Governance and Reform

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  UNEP's governing body, the United Nations Environment Assembly, replaced the earlier Governing Council in 2012. The Assembly has 193 members and meets every two years; its first session was held in Nairobi from the 23rd to the 27th of June 2014. The sixth session, UNEA-6, took place from the 26th of February to the 1st of March 2024 in Nairobi. The seventh session, UNEA-7, met in December 2025 under the theme "Advancing sustainable solutions for a resilient planet." Calls to transform UNEP into a more powerful body gained traction after the IPCC released its Fourth Assessment Report in 2007. French president Jacques Chirac presented a Paris Call for Action, backed by 46 countries including European Union nations, proposing that UNEP be replaced by a new United Nations Environment Organization modeled on the World Health Organization. The United States, Saudi Arabia, Russia, and China, the four largest greenhouse gas emitters at the time, were notably absent from that group of 46. Following the Rio+20 Summit, a General Assembly decision in December 2012 confirmed the move to universal membership for UNEP's governing body, expanding it from 58 member states to all UN member states, a change implemented in 2014.

• 7. Climate Warnings and Public Advocacy

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  As early as 1989, UNEP published a statement warning that entire nations could be wiped off the face of the Earth by sea level rise if global warming trends were not reversed by the year 2000. In 2005, a joint statement with the United Nations University predicted that 50 million people could become environmental refugees by 2010. Three years later, Srgjan Kerim, president of the UN General Assembly, estimated the number of environmental migrants by 2010 could fall anywhere between 50 million and 200 million. At the fifth Magdeburg Environmental Forum in 2008, held in Magdeburg, Germany, UNEP and car manufacturer Daimler AG jointly called for the construction of electric vehicle infrastructure. The conference brought together 250 politicians and representatives of non-governmental organizations to discuss sustainable transport. UNEP also co-chairs and co-founded the Platform for Accelerating the Circular Economy alongside partners including the Ellen MacArthur Foundation, a public-private partnership of more than 50 global organizations and governments. Its Champions of the Earth award, which began in 2005 as a successor to the Global 500 Roll of Honour, continues to recognize entrepreneurs, scientists, policy leaders, and organizations making measurable contributions to the environment each year.