Investigators said Friday that the deadly fire that tore through a popular bar in the Swiss ski resort of Crans-Montana early on New Year's Day was caused by sparklers on Champagne bottles, which ignited the bar's ceiling. Police have said about 40 people were killed and dozens were badly injured. Most of the victims were just teenagers celebrating the holiday, and the intensity of the deadly fire has left authorities with grim work to identify badly burned remains, which they say may take days, as desperate families are left to wait for word of their missing loved ones...