Is the “heat dome” in B.C. a sign of summers to come?

First of all, what is a heat dome? How rare is it? How deadly? Are the all-time high temperatures the Pacific Northwest experienced this week an anomaly, or a terrifying glimpse of the new normal?

Can we pin this all on a warming climate? Or is some of it an unlucky combination of weather systems? And if this is a sign of things to come, what do Canadians, and governments across the country, need to do to prepare for summers to come?

GUEST: Katharine Hayhoe, climate scientist

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