Your World Tonight

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.

The battle over the Strait of Hormuz is escalating, as the U.S. prepares to reinstate its naval blockade of Iranian ports, and proposes a toll on all cargo. Iran says it controls the vital shipping route, as strikes and counterstrikes continue.

And: Alberta, Ottawa, and major oil producers have reached a milestone agreement. The goals: Produce more oil, and create the world’s largest carbon capture and storage project. The latest deal follows a sweeping accord signed last fall – to get oil moving west to B.C. for export to Asian markets.

Also: A look at Canadian travel patterns, a year after many pledged not to go to the U.S. Although travel in and out of the country is up from last year – It doesn’t mean Canadians are flocking back to the U.S.

Plus: Video game layoffs, Brandon flooding, Thai music bar fire, and more.

A celebration of Latin music, dancing and food quickly turned into chaos Saturday night in Toronto. Two men are dead and four other people are wounded after a shooting at a popular street festival. Witnesses say as the sound of gunfire pierced the air - panic took hold, sending thousands of festivalgoers fleeing to safety. Police say a complex investigation is now underway.

Also: U.S. Senator Lindsey Graham has died unexpectedly at the age of 71. He's being remembered as one of the most influential and controversial figures within the modern U.S. Senate. A one time Trump critic turned ally, he used his power to advance the President's agenda. You'll hear how his legacy is being remembered very differently by his friends and his critics.

And: After more than 40 years, the Ingalls family is moving back in to their Little House on the Prairie. The rebooted version of the TV show has the same basic premise. The creators say they're trying to be faithful to the beloved book series, while also revamping the material for new audiences.

Plus: U.S. and Iran trade more strikes, Flooding in Manitoba, Iceland's referendum on joining the European Union, and more.