(FILES) A violonist (C) plays under the sun on the Pont des Arts footbridge during the annual street music festival 'Fete de la Musique' and amid a heat wave in Paris on June 21, 2026. According to the the World Weather Attribution group of scientists, human-caused climate change is "unequivocally" responsible for the intensity of a record-breaking heatwave scorching Europe. It would have been "virtually impossible" for such exceptional temperatures to occur in June fifty years ago. (Photo by Christophe DELATTRE / AFP via Getty Images)