Rail strike deadline, Quebec teacher shortage, Yukon cyanide spill, and much more

Canada's two major freight railroads are on the verge of shutting down. Without a deal by midnight, workers at Canadian National and Canadian Pacific Kansas City will be locked out, or go on strike. People in all sorts of sectors, from farmers, to commuters, to those in the chemical industry, are preparing for disruptions.

And: The school year starts next week - but Quebec says it is short thousands of teachers. The province says there are about 20,000 more students enrolled compared to last year. Teachers say they need better working conditions and more support in the classroom.

Also: Two months after a large cyanide spill at the Victoria gold mine in Yukon, the company is in receivership and there is no plan to clean up the toxins. Residents fear the damage to the land and water will be permanent.

Plus… Harm-reduction advocates say Ontario's decision to close 10 supervised drug consumption sites is a "deadly mistake", Democrats officially introduce Tim Walz, and more.