内容摘要：And Trump has also threatened other sectoral tariffs, including on pharmaceuticals and semiconductors. Those could still go into effect if they are not justified by IEEPA.

And Trump has also threatened other sectoral tariffs, including on pharmaceuticals and semiconductors. Those could still go into effect if they are not justified by IEEPA.

In Manitoba, there are a total of 25 active fires, according to the province's fire situation report, with 11 classified as out of control.Danielle Desjardins, a meteorologist with Environment and Climate Change Canada based in Winnipeg, told the BBC that the forecast for both provinces is not promising.

While a cold front is expected to hit some parts of Saskatchewan, it will not bring relief to the regions where fires are burning."The bad news about this cold front is it's going to be windy," said Ms Desjardins, adding that the wind, coupled with the heat and lack of rain, are prime conditions for wildfire spread.Smoke from the fires has also left an estimated 22 million Americans under air quality alerts this weekend.

In northern Minnesota, residents have been warned smoke could reach levels "unhealthy for everyone", while the rest of the state faces air quality warnings for sensitive groups. That alert runs through Monday evening.Canada experienced its worst wildfire season on record in 2023, when more than 42 million acres (17.3m hectares) burned.

Fires happen naturally in many parts of the world, including in Canada.

But climate change is making the weather conditions needed for wildfires to spread more likely, according to the UN's climate body.In a spacious meeting room, Fracisco Lobos, the chief corporate officer for the plant's owner – salmon-exporter Multi X – explains how farming the fish has transformed the south of Chile.

"Salmon's been part of this region's industrial revolution," he says. "There used to be a lot of poverty in the region, and now many people earn more than in other parts of Chile."Because of the industry a lot of support services have sprung up, which benefit the families living here, and people have moved here from other parts of the country for work."

Atlantic salmon are not native to Chile. Instead, eggs were brought over to Chile from the UK at the end of the 19th Century and released into rivers, lakes and the sea to grow into fish for recreational fishing.Farming the fish in netted, offshore pens then started in the 1970s, before growing substantially ever since. There were 1,343 active salmon farms across southern Chile at the end of last year.