View image in fullscreenToronto, CanadaPeople walk in the city centre, where smoke from forest fires in northern Ontario has caused poor air qualityPhotograph: Cole Burston/AFP/Getty ImagesShareView image in fullscreenChattogram, BangladeshPeople gather to watch the World Cup semi-final between Argentina and EnglandPhotograph: Zakir Hossain/NurPhoto/ShutterstockShareView image in fullscreenKyiv, UkraineFirefighters work at the site of a Russian missile strikePhotograph: Gleb Garanich/ReutersShareView image in fullscreenNusairat, Gaza StripA woman inspects the damage caused by an Israeli airstrike on the al-Bureij refugee campPhotograph: Moiz Salhi/APAImages/ShutterstockShareView image