Wildfire smoke clouds parts of Canada, including Saskatoon and Toronto. Jeff Semple looks at the dangers lingering in the air. Heather Yourex-West reports on the extreme weather that hit Montreal and Calgary; and the international help headed to Manitoba as it battles wildfires. U.S. President Donald Trump issues an ultimatum to Russian President Vladimir Putin. Jackson Proskow reports on what could happen if Russia doesn't end its war on Ukraine. Heidi Petracek explains why a New Hampshire man can't cross the U.S. border after visiting family in New Brunswick. And NASA's cameras have boldly gone where they haven't gone before. Redmond Shannon explains what NASA's closest images of the sun could teach us earthlings.

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