With hundreds of wildfires burning across Canada, smoke has drifted into the northern United States, lowering air quality across roughly a dozen states.

Wildfires burning in Canada were causing unhealthy air quality across parts of North America on Monday. Canadian wildfires burning across northern Manitoba and Saskatchewan are sending smoke through central Canada, the Great Lakes region and the northeastern United States, reducing air quality and visibility in major cities.

Canadian sensation Summer McIntosh fell just short in her quest to match Michael Phelps's feat of winning five individual gold medals at a single world championships but that has given her the motivation to improve even more.

It’s Katie Ledecky of the United States against Summer McIntosh of Canada in the final of the 800-meter freestyle, probably the most anticipated race at the swimming world championships in Singapore

Canada’s Summer McIntosh capped a dominant world swimming championships with her fourth gold medal on Sunday, winning the women’s 400-metre individual medley in championship-record time.