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A new Greenpeace International report, Toxic Skies: How Agribusiness is Choking the Amazon, reveals how fires linked to industrial agriculture are turning the forest’s air toxic during the dry season. The findings are a stark warning that the Amazon’s crisis is not only about trees. It is about the air millions of people breathe, and the health of our shared planet.

Still from "World on Fire" Stories - Brazil's Episode #2 - Urban Haze in Porto Velho. © Fernanda Ligabue / Greenpeace
Porto Velho (Brazil), October 2024. © Fernanda Ligabue / Greenpeace

When the sun rises over Porto Velho, on the edge of the Brazilian Amazon, it does not pierce through the mist. It struggles through the smoke. For months each year, the air fills with the haze of fires deliberately set to clear forests for cattle or to renew pasturelands. What was once the world’s greenest ecosystem often breathes air contaminated with higher levels of toxic particles than Beijing, São Paulo or Santiago, according to the report.

What the study found

Researchers monitored air quality in two Amazonian cities, Porto Velho (Rondônia) and Lábrea (Amazonas), combining satellite and ground-based data. The results are alarming:

  • During the record-breaking fire season of 2024, levels of fine particulate matter (PM2.5) exceeded WHO daily health guidelines by more than 20 times.
  • Even in 2025, a year with far fewer fires, the air still exceeded the guidelines by over six times.
  • Between 2019 and 2024, the annual average pollution in Porto Velho was higher than in major global megacities, largely driven by sharp increases in PM2.5 levels during the fire season.
  • Around 75% of burned areas around Porto Velho in 2024 are used as pasture for cattle production, showing that most fires are linked to grazing land use.
  • More than half of the total burned area in 2024 in the Amazon biome falls within a 360km radius around the facilities of Brazil’s largest meatpacker, JBS. Meatpackers such as JBS do not effectively prohibit and monitor the deliberate use of fire in their supply chains – leaving meatpackers exposed to the risk of indirect or direct supply chain links, including through maintaining business relations, with farms in burned areas. 

This is not a natural disaster. It is a business model that profits from destruction and public suffering.

Breathing in the crisis

Burning in Amazon for Agriculture. © Rodrigo Baleia / Greenpeace
Cattle ranching in a deforested area in Querência, Mato Grosso State. Cattle ranching is the primary driver of forest destruction in the Brazilian Amazon. Close to 80% of the total deforested areas in the Amazon are occupied by pastures. © Rodrigo Baleia / Greenpeace

The Amazon’s fires are not acts of nature. They are deliberately lit to clear forest or renew pastures for cattle. And, behind every statistic are human stories. Hilda Barabadá Karitiana, from the Karitiana Indigenous Territory near Porto Velho, describes how her community lives with the smoke:

During the dry season, the air becomes thick with smoke. Even when the fire is far away, we feel it. Sore throats, constant coughing, and irritated eyes. It affects everyone.– Hilda Barabadá Karitiana

For people like Hilda, the smoke is not just a seasonal nuisance. It is a public health emergency. Exposure to high levels of PM2.5 causes respiratory infections, heart disease and asthma, especially among children and older adults. The air itself has become an agent of crisis.

Debunking Myths

✘ Fires in the Amazon region occur naturally and are beneficial for the ecosystem.

✔ Fires in the Amazon region are caused by human activity and are highly destructive to the rainforest ecosystem.

✘ Fires in the Amazon happen because of logging.

✔ Vast areas of the Amazon biome are set on fire to make way for cattle ranching.

A turning point before COP30

This year’s COP30, hosted in Belém, on the edge of the Amazon, will be the first UN Climate Summit held inside a tropical forest. It is an opportunity to put Amazonian voices and air quality at the centre of global climate negotiations and to demand that governments and corporations act.

Chief Zé Bajaga, from the Caititu Indigenous Territory, says:

Here in the Amazon, we face invasion, fires and pollution from companies that profit while our land burns. Those who destroy for money must be held accountable.– Chief Zé Bajaga

What needs to happen now

The 2nd Forest Defender Camp 2025 in Papua Day 4. © Jurnasyanto Sukarno / Greenpeace
Brasil Amazon Indigenous Nathalia Kycendekarun Apurina seen together with Papuan and Congo Basin Indigenous People under Merbau tree during the Forest Defender Camp 2025 in the Sira village forest, at Knasaimos customary area in South Sorong, Southwest Papua.  © Jurnasyanto Sukarno / Greenpeace

World leaders need to step up and:

  • COP30 should deliver an action plan to implement the UNFCCC’s 2030 target to halt and reverse deforestation and forest degradation of the world’s forests. It’s time to turn commitments into action.
  • Governments must urgently regulate the agricultural and financial sectors to ensure their alignment with the Paris Agreement, the Global Biodiversity Framework, and the UN Sustainable Development Goals.
  • Governments must ensure the transition to truly ecological and just food systems, an end to deforestation, and the reduction of emissions associated with agriculture, including methane.
  • World leaders must ensure funding for real solutions to protect and restore forests by providing finance directly accessible to Indigenous Peoples and Local Communities.

The Amazon’s toxic skies are not inevitable. They are the product of political choices and economic greed. As world leaders prepare for COP30, this is the moment to act.

Lis Cunha is a campaigner with Greenpeace International’s Respect the Amazon campaign.

Toxic Skies: The Amazon is now breathing dirtier air than the world’s biggest cities

Climate Change

Why Beaches Are Swamped With Sargassum, the Stinky Seaweed Menace

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It smells like rotten eggs, releases toxic gases, endangers sea life and scuttles vacations. Scientists, startups and communities are trying to figure out what to do with it all.

From our collaborating partner Living on Earth, public radio’s environmental news magazine, an interview by Aynsley O’Neill with Inside Climate News’ Teresa Tomassoni.

Why Beaches Are Swamped With Sargassum, the Stinky Seaweed Menace

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Why women’s leadership is central to unlocking the global phaseout of fossil fuels

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Osprey Orielle Lake is founder and executive director of The Women’s Earth and Climate Action Network (WECAN) and a steering committee member of the Fossil Fuel Treaty.

Around the world, women are leading some of the most powerful efforts to stop fossil fuel expansion and implement the just transition the climate crisis demands.

In the Ecuadorian Amazon, Nemonte Nenquimo, an Indigenous Waorani woman, led a successful lawsuit for the Waorani against the Ecuadorian government to protect their territory and the Amazonian rainforest from oil extraction. Ecuador’s courts ruled in favor of the Waorani, setting a legal precedent for Indigenous rights and prompting similar legal fights worldwide.

In the heart of Cancer Alley in the Gulf South of the United States, Sharon Lavigne, founder of Rise St. James, took on fossil fuel polluters and won. After stopping a Formosa petrochemical facility in her parish, she continues to organize communities to stop fossil fuels, bringing awareness to the severe health impacts caused by the industry.

An initial cornerstone for an upcoming government convening on fossil fuel phaseout is the Fossil Fuel Treaty, which was founded by Tzeporah Burman. She won the 2019 Climate Breakthrough Award for her bold Treaty vision, which has now taken center stage in international climate action.

These women are not anomalies, they are part of a broader movement. Women the world over are stopping harmful projects and building regenerative futures. They are defending land, water, climate, and health. They are redefining what leadership looks like in a time of crisis.

    Research has found that countries with higher representation of women in parliament are more likely to ratify environmental treaties. One prominent cross-national study found that CO2 emissions decrease by approximately 11.51 percent in response to a one-unit increase in each countries’ scoring on the Women’s Political Empowerment Index. When women are incorporated into disaster planning or forest management, projects are more resilient and effective.

    Yet because of persistent gender inequality, women – particularly Indigenous, Black and Brown women and women in low-income and frontline communities – are often disproportionately harmed by fossil fuel extraction and pollution. At the same time, they are also indispensable leaders of equitable solutions.

    Bold, transformative solutions needed

    Although the climate crisis may not be in the headlines recently, the crisis is increasing at lightening speed. From 2023 to 2025, the world crossed a dangerous threshold, marking the first three-year global average that exceeded the crucial 1.5°C guardrail, the very limit scientists identified as critical to avoid the worst catastrophic tipping points.

    This is not a eulogy for 1.5°C, but an alarm about a narrowing window. The data makes clear that we still have an opportunity to hold long-term warming below that life-affirming threshold. What is required now is not incrementalism and business as usual but bold and transformative solutions from grassroots movements to the halls of government.

    A woman looks at a solar panel, at a factory called Ener-G-Africa, where high-quality solar panels made by an all-women team are produced, in Cape Town, South Africa, February 9, 2023. (Photo: REUTERS/Esa Alexander)

    A woman looks at a solar panel, at a factory called Ener-G-Africa, where high-quality solar panels made by an all-women team are produced, in Cape Town, South Africa, February 9, 2023. (Photo: REUTERS/Esa Alexander)

    At the top of the list in tackling the climate crisis is the urgent need for a global phaseout of fossil fuel extraction and production. Coal, oil, and gas remain the primary driver of the climate crisis, and fossil fuel pollution is responsible for one in five deaths worldwide. The simple but challenging fact is, there is no way forward without a phaseout.

    In 2023, at the U.N. Climate Summit in Dubai (COP28), governments agreed for the first time to “transition away from fossil fuels.” The language was historic but nonbinding, and implementation has been severely hindered. Most governments are doubling down and increasing production across coal, gas, and oil. At COP30 in Brazil, while 80 countries called for fossil fuel language in the final outcome text, governments ultimately left without any commitments to a phaseout.

    Women’s assembly for fossil fuel phaseout

    In response to this stalled progress, Colombia and the Netherlands are convening the First Conference on Transitioning Away from Fossil Fuels, bringing together governments committed to advancing cooperation toward a managed, equitable phaseout. Occurring outside the formal UN climate negotiations, the gathering reflects a growing recognition that progress often requires voluntary alliances of ambitious nations.

    The urgency of this moment demands more than policy tweaks. It calls for a restructuring of the systems that fueled the crisis such as economic models that externalize harm, energy systems that prioritize profit over people, and governance structures that marginalize frontline communities. How we navigate this transition will shape the world our children inherit, and evidence shows that women’s leadership is vital to ensure a healthy and equitable outcome.

    Colombia aims to launch fossil fuel transition platform at first global conference

    As governments, civil society and global advocates prepare for the conference in Colombia, women’s leadership must not be an afterthought. It needs to be central to the agenda, inspired by equity, justice and care.

    That is why the Women’s Earth and Climate Action Network is convening global women leaders to advance strategies, proposals, and projects at the public Women’s Assembly for a Just Fossil Fuel Phaseout to be held virtually on March 31 to call for transformative action in Colombia. All are welcome.

    A livable future depends on bold action now, and on women leading the way at this critical moment.

    The post Why women’s leadership is central to unlocking the global phaseout of fossil fuels appeared first on Climate Home News.

    Why women’s leadership is central to unlocking the global phaseout of fossil fuels

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    On the Farm, the Hidden Climate Cost of America’s Broken Health Care System

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    American farmers are drowning in health insurance costs, while their German counterparts never worry about medical bills. The difference may help determine which country’s small farms are better prepared for a changing climate.

    Samantha Kemnah looked out the foggy window of her home in New Berlin, New York, at the 150-acre dairy farm she and her husband, Chris, bought last year. This winter, an unprecedented cold front brought snowstorms and ice to the region.

    On the Farm, the Hidden Climate Cost of the Broken U.S. Health Care System

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