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NEW YORK (AP) — Wall Street’s superstars tumbled Monday as a competitor from China threatens to upend the artificial-intelligence frenzy they’ve been feasting on. The S&P 500 dropped 1.5%, dragged down in large part by a 16.9% fall for Nvidia .

NORTH VANCOUVER, B.C.

TORONTO — Stock markets in Canada and the U.S.

MONTREAL — The association representing Quebec's police chiefs is sounding the alarm that collisions involving children transported by school bus are on the rise, reaching levels not seen since before the COVID-19 pandemic.

WASHINGTON — As Canada makes its case for enhanced border security to U.S. President Donald Trump's top security picks, a prominent Republican senator says Canada’s recent investment announcement was tardy but welcome. James Risch, chair of the U.S.

After more than a half century in limbo, the federal government has abandoned plans for an airport at a site in Pickering, Ont., and will instead look to expand the area's urban national park.

HALIFAX — The Nova Scotia government says a program to bring wind-generated electricity to 11 large customers is keeping the province on track to meet its goal of producing 80 per cent of its electricity with renewables by 2030.

OTTAWA — Canada Post and representatives from its union squared off on Monday at a federal inquiry into the month-long strike that halted mail delivery across the country and the viability of the postal service's business model.

TORONTO — Premier Doug Ford's decision to speed up the rollout of alcohol sales in corner stores — which first sparked early election speculation last spring — will cost the province more than $600 million, Ontario's budget watchdog said Monday.

A frenzy over an artificial intelligence chatbot made by Chinese tech startup DeepSeek was upending stock markets Monday and fueling debates over the economic and geopolitical competition between the U.S. and China in developing AI technology.