Animated map of the heatwave in Europe, showing daily temperature forecasts from Monday, June 30 to Saturday, July 5 at 1500 GMT. Based on ECMWF (Copernicus) forecasts on June 30 at 0000 GMT ...

Photo: Krisztian Bocsi/Bloomberg News Europe’s economy has a north-south divide—and now it’s the poorer south that is powering the region’s return to growth.