Europe has been roasting for days with record-breaking temperatures across the continent. More than 150 million people have been living through temperatures above 35 degrees Celsius. We talked to Armel Castellan, the Extreme Heat Services Technical Advisor at the World Meterological Organization and Theodore Keeping, an extreme weather researcher at Imperial College London. He's also the lead author of a new so-called 'rapid study' by the World Weather Attribution that says the heatwaves Europe is now experiencing are driven by climate change and would not have been possible 50 years ago.