Millions of Canadians in path of ‘incredibly serious’ heat dome

Millions of people in the Maritimes, Quebec, and Ontario are set to be caught under a stifling heat dome, which is expected to linger for days. Eric Sorensen looks at the dangers of a heat dome, how people are preparing for the abnormally high temperatures, and who could be the most at risk.

• ‘Dangerously hot and humid’ weather to hit southern Ontario, Quebec