The Milan-Cortina Winter Olympics officially open with a star-studded opening ceremony at the San Siro Stadium on Friday. The most geographically dispersed Games in history will start in Italy's economic capital at 1900 GMT with a three-hour extravaganza that takes in the three other sites spread across the Alps and the Dolomites. While details of the ceremony remain secret, the theme of harmony runs through it, threading together different elements from the financial hub of Milan to the snow-capped mountains of Cortina d'Ampezzo.Advertisement Advertisement Advertisement Advertisement And for the first time the 2,900 athletes...