US and Canada are fighting who are to blame for fires

As deadly fires raged in the Canadian province of Manitoba this summer, Republican legislators in the nearby states of the United States wrote letters asking Canada to be held accountable for the smoke, which is moving south.

“Our sky is suffocated by smoke from a wild fire that we have not started and cannot control,” writes Calvin Kalahan, a Republican state representative from Wisconsin, in a letter from the beginning of August.

Kalahan, along with lawmakers from Iowa, Minnesota and North Dakota, filed an official complaint with the US Environmental Protection Agency (EPA), calling on a wild fire management investigation in Canada.

Manitoba Prime Minister Wab Kineu quickly condemned this move, accusing the legislators of throwing a “wooden intrigue” and playing “political games”.

By August, the wild fires had burned more than two million acres in Manitoba, forced thousands to evacuate and killed two-brown couple, which authorities said they were trapped by fast flames around their family home.

As September is over, the data shows that 2025 is about to be the second best fire in Canada.

Research published In Nature magazine in September He revealed that the smoke from wild fires in Canada also had distant fatal consequences. He estimates that wild fires in 2023 – the country’s utmost, recorded in the area – caused over 87,500 acute and premature deaths around the world, including 4,100 acute smoke -related deaths in the United States and over 22,000 premature deaths in Europe.

Wild fire smoke contains PM2.5 – a type of air pollution – which is known to cause inflammation in the body. It can exacerbate conditions such as asthma and heart disease and, in some reasons, can damage neural connections in the brain.

“These are big numbers,” says Michael Brower, a professor at the University of British Colombia, who co -authored the study. He added that the findings show that wild fire smoke should be treated as a serious health problem similar to breast cancer or prostate cancer.

For some US legislators, the wines falls in Canada.

“The failure of Canada to control huge fires,” Kalahan wrote in August, “harm the health and quality of life of more than 20 million Americans in the Midwest.”

Their complaints raise the question: Can Canada do more to limit his fires – and for his smoke?

Climate and fire experts in both countries have told the BBC that the answer is largely not.

“While we, as a global society, are not dealing with climate change in human climate, we will have this problem,” says Mike Flansigan, an emergency management expert and science to fire at Thompson Rivers University in British Colombia.

Metrics show that the wild fires of Canada, a natural part of its huge boreal forest, have deteriorated in recent years. The firefighter season now begins earlier, ends later and burns on average more land. The 2023 fires destroyed 15 million hectares (37 million acres) – an area larger than England – while the 2025 plasters have burned 8.7 million hectares (21.5 million acres).

By mid-September, there were still more than 500 fires that burned mainly in British Colombia and Manitoba, according to the Canadian Inter-Strigoratory Forest Center.

Approximately half of the wild fires in Canada are triggered by lightning, while the rest derive from human activity, according to data from the national forestry database. Experts warn that the hot temperatures make the ground more dry and more proposed for ignition.

Wild fires are not only worsened in Canada. Recently, the United States saw some of its most harmful flames, including 2023, the Hawaiian fires, which died at least 102 people, and the Palisades fire in January, the most destructive in Los Angeles history.

Both sides struggled to maintain the pace, often sharing fire resources. This year, Canadian bombers were located in California, while over 600 US firefighters were traveling north to help Canada, according to the US Forest Service.

In Canada, strained resources – and the deteriorating fires – nourish calls for the National Fire Service. The response of emergency offers is currently being processed separately by each of the provinces and territories.

“The system we’ve currently worked 40 years ago. Today? Not so much,” argues G -N Flandigan.

Others offer controlled burns, a practice used in Australia and by local communities as a solution, although these fires will still generate smoke. Some argue for better cleansing of flammable materials in forests and near cities or investing in new technology that can help to discover more fires faster.

Part of this job is already underway. In August, Canada promised over $ 47 million for research projects to help communities prepare better and soften the fires.

However, experts such as Jen Beverly, a wildlife fire professor at the University of Alberta, warn there is a small Canada to completely prevent fires.

“These are highly intensive fire ecosystems in Canada, she said, which are different from fires in Australia or the United States. “We have a lot of difficult fires to manage in extreme conditions and we see more than those due to climate change.”

With a closer climate, Prof. Beverly said that the pollution should be paid. She noted that the United States is the world’s second worst carbon transmitter behind China. “I want to say we have to blame them for the problem,” she argued.

In recent months, the Trump administration has also repealing environmental policies intended to reduce emissions and withdrew the United States from Paris Climate Agreements.

Sheila Olmsted, Professor of Environment Policy at Cornell University, noted that Canada and the United States have a history of cooperation for pollution and climate, including an air quality agreement signed by the two in 1991 to deal with acid rain.

“It was a very clear framework to deal with the problem and that seems to be missing here,” Olmsted told the BBC. Both sides, she said, will take advantage of working together on fires instead of trading guilt.

As for the EPA complaint, it is not clear what the agency can do to deal with the concerns of US lawmakers. In a statement to the BBC, the EPA said it was reviewing it “and would respond through appropriate channels.”

Prof. Brower said the data in his study show that although fires burn in Canada – often in remote areas – their impact can reach far beyond.

The findings, he told the BBC, calling for rethinking how the consequences of climate change are understood.

“The effects of a higher climate are localized and there are winners and losers,” said Prof. Brower. “But this is an illustration that some of these effects become global.”

He claims that US legislators’ complaints are “unfortunate distraction” and that the focus should be instead of cooperation and learn how to “live with smoke”.

“These things don’t go away,” said Prof. Brower, adding that there are ways to prevent future deaths if there is a will to adapt.