Your World Tonight

More than 900 wildfires are burning across Canada. One in five of those fires are burning across northwest Ontario alone. As communities are forced out of their homes - the province faces scrutiny of its handling of the emergency. But Ontario Premier Doug Ford is strongly defending his government's response.

Also: Two American troops stationed in Jordan are dead - after Iran targetted U.S. bases in allied Gulf States. They are the first Americans killed in since March, as the U.S and Iran continue to trade air strikes on one another.

And: Since 1960, Thousands of Toronto's elementary school students have visited the Toronto islands to learn about science and nature on overnight trips. But after sweeping school board cuts -- that program is ending. You'll hear about what's being lost, and how communities are reacting.

Plus: How wildfire smoke affects people with respiratory illnesses, Women and girls lose access to humanitarian aid, Disability exhibit in Prague, and more.

There are now about 900 active wildfires burning across the country, with dozens more added to the tally today alone. As politicians make big promises to help, crews and volunteers are working around the clock to contain the flames.

And: U.S. President Donald Trump blames Canadian forest management for smoke crossing the border, threatening devastating new tariffs.

Also: Is it worth it to host international sporting events in Canada? A look at the experience of Montreal — 50 years after it hosted the Summer Olympic Games.

Plus: A profile of the next UK prime minister Andy Burnham, U.S. cyclosporiasis outbreak traced to lettuce served at some U.S. Taco Bell locations, and more.

Fast-moving wildfires are destroying communities, and forcing thousands from their homes. The people of Collins First Nation say they fled ahead of the flames with just the clothes on their backs.

And: Environment Canada is urging people in many parts of Ontario to cancel any outdoor activities, as air quality readings spark alarm.

Also: U.S. President Donald Trump addresses the nation. He’s suggested it will be about election integrity — “and a few other things”. Trump has frequently made unsubstantiated claims that the 2020 election — which he lost — was “rigged”.

Plus: Meta expands safeguards for its AI tools, human testing for ebola vaccine, U.S. lawmakers complain about Canadian forest management, and more.

Canada’s biggest city is topping the wrong kind of chart of major cities with the worst air quality. The air is thick with a yellow haze and the smell of smoke is everywhere. And some places have it even worse. The culprit: wildfires burning across the country.

Also: The country’s population is aging rapidly, putting more pressure on specialist care. But seniors are struggling to get access to specialists, which can lead to life-threatening consequences.

Plus: WestJet flight attendants vote to strike, Trump’s choice for attorney general grilled at senate, Bank of Canada governor sees signs of economic growth, and more.

Environment Canada has issued alerts for at least five provinces and one territory. Extreme heat, wildfires, and tornadoes are making for more volatile weather across the country.

And: Public health experts in the U.S. are trying to track the source of an outbreak of cyclosporiasis. It’s usually food- or water-borne. The outbreak has spread to 30 states, and while it’s not usually fatal, it can be very unpleasant.

Also: President Donald Trump backtracks on his plan to charge transiting ships a fee, as the U.S. and Iran each claim control of the Strait of Hormuz.

Plus: The Assembly of First Nations criticizes the prime minister's major projects plan, Canadian connection to the murder of a Punjabi singer, the campaign to free a Palestinian doctor, home insurance costs rise in Canada, and more.