Northern Minnesota, the Upper Peninsula of Michigan and most of Wisconsin are also under air quality alerts due to the smoke from wildfires in Canada.

John Ioannidis: What's shaken public confidence in science?
There’s no Canada-U.S. trade deal—and that’s a good thing: Tim Sargent in The Hub
Video Wave of severe weather hits US [Video]
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Misguided treatment of Egerton Ryerson a glaring historic injustice: Paul Bennett
Roadmap to Canadian energy superpowerdom: Damjan Krnjević Mišković for Inside Policy