This year’s COP30 summit in Brazil marks 10 years since the landmark Paris Agreement. Yet since then, international commitments to climate action have begun to erode. Last year’s talks ended amid anger from Global South countries over pitiful financing for their efforts to cut carbon pollution and adapt to climate change, and fear off a climate-denying MAGA takeover in the United States.

At a pivotal moment for both climate action and the multilateral process, DeSmog covers the influence of Big Oil and Big Ag — meat, dairy, agrochemicals — during this year’s talks, along with the advertising and public relations agencies that work for them. These polluting industries and companies are sending thousands of lobbyists to Belém, to do their utmost to ward off the Paris pact’s measures for a quick global transition to low-carbon energy and agriculture — which are critical to slowing the acceleration of the climate crisis.