Danish authorities reported trees blown down and the highest water levels in years after Storm Pia swept across north-western Europe on Thursday and Friday. An 81-year-old man died in a head-on collision when a woman driving another car sought to evade a fallen tree in Tappernøje around 80 kilometres south of Copenhagen. Lengthy queues built up after the bridge over the Great Belt linking two large Danish islands was temporarily closed to traffic. Flights, trains and ferries were cancelled. The Baltic Sea ferry between Rødby and Puttgarden restarted operations in the morning, and ferry service…