TORONTO — Southern and Eastern Ontario will be slammed with "dangerously hot" temperatures for at least the next few days.

TORONTO — Southern and Eastern Ontario will be slammed with "dangerously hot" temperatures for at least the next few days.

TORONTO — Southern and Eastern Ontario will be slammed with "dangerously hot" temperatures for at least the next few days.

Several cities in the eastern United States have faced record high temperatures due to a climate phenomenon known as the "heat dome."

Authorities across Southern Europe urged people to seek shelter Sunday and protect the most vulnerable as punishing temperatures from Spain to...

Authorities across Southern Europe urged people to seek shelter Sunday and protect the most vulnerable as punishing temperatures from Spain to...

Climate change has been exacerbating heat waves, and the problem isn’t going away anytime soon. An increasingly hot planet — due largely to...

Climate change has been exacerbating heat waves, and the problem isn’t going away anytime soon. An increasingly hot planet — due largely to...

A global review of extreme heat has...

A global review of extreme heat has...