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 We love feedback at The Big Story, as well as suggestions for future episodes. You can find us:Through email at hello@thebigstorypodcast.ca Or @thebigstoryfpn on Twitter