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In many parts of the world this has been a season of extreme heat. Records have been broken from North America to Europe, from the Middle East to Japan and Korea. We know the climate is changing, and that many of the reasons are man-made. International commitments to limit the average rise in global temperature - to less than two degrees above pre-industrial levels - demand concerted action around the world. Chris Morris and a panel of expert guests discuss the science behind extreme heat. What are the political solutions and the new technologies that may be able to help us? And even if we can mitigate against extreme temperatures, are heatwaves going to become the new normal?

(Photo: Cameroonian Girl sweating and drinking water from a green jerry can. Credit: Getty Images)