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Wired

First Transmissible Cancer Identified in North American Catfish

Researchers have discovered a transmissible cancer in freshwater fish, specifically catfish, in a lake that crosses the US-Canada border. This is the first known instance of such a cancer in fish, highlighting new areas of study in cancer biology.

Ars Technica

Canadian Legislator Reads AI Prompt During Speech

Bill Oliver, a member of the New Brunswick legislative assembly, read what appeared to be an AI prompt during a speech. The incident, which initially went unnoticed, has since gained attention on social media and from mainstream media outlets.

Washington Examiner

Gordie Howe International Bridge Opens Following Delays Over Tariff Dispute

The Gordie Howe International Bridge, connecting Michigan and Ontario, officially opened on July 24, 2026, after delays related to tariff disputes between the U.S. and Canada. The bridge will open for motorist traffic on July 27, with pedestrian access starting on August 5. The ceremony was attended only by Canadian officials due to tensions with the Trump administration.

The Hill

Changes in U.S.-Canada Trade Policy Under Trump Administration

The Trump administration has altered its approach to the U.S.-Canada trade relationship, impacting the legal and political aspects of the ongoing trade war. This shift indicates a new strategy concerning tariffs and negotiations between the two countries.

The Daily Beast

Harry Enten Discusses Trump's Low Popularity in Canada

CNN's Harry Enten highlighted President Trump's low approval ratings in Canada, with only 20 percent of Canadians expressing confidence in him. This follows Trump's recent imposition of tariffs on Canadian goods and negative comments regarding Canada's environmental impact. Ontario Premier Doug Ford and Prime Minister Mark Carney have both responded to the situation, indicating a readiness to negotiate and push back against perceived bullying.

Fox News — Latest

Canada cancels joint bridge celebration with US amid tariff threats from Trump

Canada has called off a planned joint celebration with the US for the opening of the Gordie Howe International Bridge due to renewed tariff threats from President Trump. The bridge is still set to open next week, but the celebration will only include Canadian officials. The project has faced difficulties amid ongoing trade tensions between the two nations.

dailymail.com

CDC Issues Travel Advisory for Costa Rica Due to Chikungunya Virus Outbreak

The CDC has issued a Level 2 travel advisory for Costa Rica due to an outbreak of the chikungunya virus in the Guanacaste Province, particularly in Playa Langosta. The advisory comes as local transmission has been confirmed, with multiple cases reported among both locals and tourists. Travelers are advised to take precautions and consider vaccination before visiting affected areas.

Guardian — US

Trump defends 50% tariffs on Canadian goods

Donald Trump has announced a 50% tariff on most Canadian goods, claiming that Canada cannot survive without the U.S. This decision, announced on July 21, 2026, is expected to heighten tensions between the two countries. Canadian leaders, including Mark Carney, are preparing to discuss the implications of these tariffs.

Axios

Trump Invokes Smoot-Hawley Tariff Authority to Impose Tariffs on Canada

President Trump is invoking a provision of the Smoot-Hawley Tariff Act to impose a 50% tariff on select Canadian imports, effective in August. This decision is a response to alleged discrimination against U.S. exports and follows recent limitations on Trump's tariff authority. The tariffs are expected to affect around $20 billion in Canadian goods.

The Hill

Trump Meets Lebanese President Aoun; Tensions with Iran Escalate

President Trump met with Lebanese President Joseph Aoun on July 21, 2026, in the Oval Office, the first visit by a Lebanese head of state to the White House since 2009. The meeting occurs against a backdrop of heightened hostilities between the U.S. and Iran.

New York Post

CFL linebacker Jayden Dalke dies in car crash

Jayden Dalke, a linebacker in the Canadian Football League, was killed in a car crash on Saturday night while driving the wrong way. Authorities reported the presence of cannabis and alcohol in his vehicle.

Axios

U.S. to Impose 50% Tariffs on Select Canadian Goods

On July 20, 2026, the Trump administration announced a 50% tariff on select Canadian goods, citing discrimination against U.S. exports. The tariffs, effective next month, will cover about $20 billion in imports and are enforced under Section 338 of the Tariff Act of 1930. Canadian officials have criticized the move as a violation of the USMCA and pledged to negotiate further.