Wildfires across Canada, air quality worsens, Trump elections speech, 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.