It’s night in America, and the darkness is spreading quickly.

YouTube video by Global Weirding with Katharine Hayhoe

YouTube video by Dr. Sofia Pineda Ochoa

Wildfires in northwestern Ontario led to air quality alerts and evacuations, with smoke spreading into the U.S.

The prime minister's "mandate for change" must include a change in Canada's industrial strategy.

Gloomy stretch ahead, with Ontario set for days of rain and unusually cool weather

May 16 storm touched down around 2:15 a.m., south of the city

Meteorologist Kevin MacKay explains how the UV index is measured and why the time of year is more important than how hot it is when thinking about skin protection.

Rising oceans will force millions away from coasts even if global temperature rise remains below 1.5C, analysis finds

Exclusive: Guardian investigation reveals guidance for retailers in England changed after campaign by global food firms

A series of essays that explore the economic and cultural factors that contribute to the rise of populism and policy solutions.

Doug Ford is using tariffs to create a false choice. Does Ontario really want to join Russia and China, who also have rules-free special economic zones?

"It is not whether you believe but whether you are believable." — Pope Francis

Liberal Leader Mark Carney clinched a victory in his rookie federal election campaign on Monday, capping a remarkable political debut that resurrected his party’s fortunes after Justin Trudeau's depar...