The discovery adds strong evidence that the outbreak that sickened thousands over the summer originated in a grower’s field or processing facility.

The University of Calgary tracked wolverines across a vast area of Alberta and B.C., including Banff National Park. Researchers found wolverines aren't just avoiding people in those areas — places with more recreation actually have fewer wolverines living there.

The lava rock formation protruding from the rocky cliffs of Volcanoes National Park crumbled some time last weekend.

Prime Minister Mark Carney's new national council on artificial intelligence is meant to provide the government with guidance on the evolution of its AI strategy and on making the technology safer.

The artificial intelligence boom has pushed up the stock market, even as interest rates have pulled it down, our columnist says.

David Ellison, the tech scion who will run the combined company, borrowed the name of his original entertainment company that reflects his love of aviation. On Friday, the C.E.O.s of Warner Bros. were told they would not stay on once the companies merged.

The mostly Democratic-led states say that the E.P.A. acted unlawfully when it erased Biden-era limits on carbon dioxide from coal- and gas-fired plants.