Fentanyl has killed thousands. Here are some facts about the powerful opioid

Fentanyl has emerged as the primary cause of illicit drug deaths in Canada and the United States, and its trafficking has been cited by U.S. President Donald Trump to justify his threat of steep tariffs on goods from Canada.

But the potent opioid also has a decades long history and is extensively used as a medical pain management tool. Here's a look at the drug and how it's used:

— Fentanyl is a synthetic opioid used to help relieve severe pain.

— Health Canada says fentanyl is 20 to 40 times more potent than heroin and up to 100 times more potent than morphine.

Year in review: A look at national news events in May 2024

A look at national news events in May 2024:

1- Manitoba's Peguis First Nation declares a state of emergency after years of flooding caused heavy damage to infrastructure and housing. Chief Stan Bird says the community has seen significant rates of emotional distress, with a rise in self-harm among youth, drug addiction and incidents of domestic violence. The First Nation recently filed a $1-billion lawsuit alleging the federal and Manitoba governments failed to protect it from the frequent flooding.

Settlement reached in complaint over Canada Post layoffs as strike hits four weeks

The union representing Canada Post workers says an unfair labour practice complaint over the company's layoffs has been resolved.

The Canadian Union of Postal Workers filed the complaint with the Canada Industrial Relations Board on Nov. 29 after hundreds of striking postal workers received temporary layoff notices while on strike.

The union said in a statement issued Wednesday night that a mediated settlement has been reached that requires Canada Post to notify affected employees that they are not on a temporary layoff.