Tuesday, January 20, 2026

UN Secretary-General Calls On Ad Industry to End Fossil Fuel Greenwashing: ‘Mad Men Fueling the Madness’

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In a speech honoring World Environment Day, UN Secretary-General António Guterres had strong words for the advertising and PR agencies still working with the fossil fuel industry.

United Nations Secretary-General António Guterres has issued a powerful call to action for advertising and public relations agencies to cut ties with the fossil fuel industry by next year. During a speech to mark World Environment Day at the American Museum of Natural History in New York, Guterres emphasized the need for these agencies to stop enabling the fossil fuel sector’s detrimental impact on the environment.

“Stop taking on new fossil fuel clients, from today, and set out plans to drop your existing ones,” Guterres told advertising and PR agencies. He highlighted how the fossil fuel industry has engaged in “greenwashing” while actively delaying climate action through lobbying, legal threats, and massive advertising campaigns, aided by the advertising and PR sector.

This urgent plea comes in the wake of Copernicus, the EU’s weather monitoring agency, confirming that May was the hottest month on record. This milestone marks one year of record-breaking temperatures and the eleventh consecutive month where global temperatures exceeded the 1.5C warming threshold set by the Paris Agreement. Currently, the world has warmed by 1.2C compared to pre-industrial levels, primarily due to the burning of coal, natural gas, and oil, which are the largest sources of global greenhouse gas emissions. A study published earlier this week found human-caused warming hit record highs despite the rise in climate action.

Guterres pointed out that advertising and PR firms, along with news media and tech companies, are complicit in planetary destruction. He urged these industries to cease promoting fossil fuels and to terminate existing contracts with fossil fuel clients. “Fossil fuels are not only poisoning our planet — they’re toxic for your brand,” he said.

BP subway ad promoting its sustainability efforts.
BP ad promoting its sustainability efforts | Courtesy

The fossil fuel industry has extensively utilized international events, social media platforms, and influencers to promote activities that contribute to global warming. A 2023 analysis by Climate Action Against Disinformation (CAAD) revealed that major fossil fuel corporations invested millions in digital advertising leading up to COP28, a crucial climate summit known for allowing fossil fuel lobbyists to participate. According to the Kick Big Polluters Out (KBPO) coalition, at least 2,456 representatives from major polluting companies attended the event, compared to just 636 at COP27.

Johnny White, a lawyer with ClientEarth, emphasized the need for banning fossil fuel advertising and severing ties with polluting companies to build a sustainable future. “Banning fossil fuel advertising and forcing the PR sector to cut ties with systemically polluting companies is a clear necessity for building a cleaner and fairer future,” he said. “We can either have a rapid transition away from fossil fuels, or we can have fossil fuel industry influence continuing to permeate our societies and subvert climate action. We can’t have both.”

“Many in the fossil fuel industry have shamelessly greenwashed, even as they have sought to delay climate action — with lobbying, legal threats, and massive ad campaigns. They have been aided and abetted by advertising and PR companies – Mad Men fueling the madness. I call on these companies to stop acting as enablers to planetary destruction,” Guterres stated. He urged the industry to use its creative minds who are already mobilizing around this cause. “They are gravitating towards companies that are fighting for our planet — not trashing it,” he said.

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