A few weeks ago, temperatures in India blasted past 50 degrees Celsius. Currently much of the United States and parts of Canada are in the grip of a heat dome that could shatter records. Summer's hot, and heat waves happen. We know this. But if a heat wave is a period of time with temperatures above normal, and the "normal" temperature keeps rising...

What do the heat waves of the future mean for us? What exactly is a "wet bulb" measurement? Which parts of the world can withstand the heat to come, and how can we prepare the ones that can't?

GUEST: Dr. Kent Moore, professor of atmospheric physics, University of Toronto

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