Europe swelters in summer's first heatwave as continent warms

Southern Europeans braced Saturday for the first heatwave of the northern hemisphere summer, as climate change pushes thermometers on the world's fastest-warming continent increasingly into the red. Temperatures are set to rise to 37 degrees Celsius (99 Fahrenheit) in Rome, driving the Eternal City's many tourists and Catholic pilgrims to the Vatican alike towards the Italian capital's 2,500 public fountains for refreshment.