Guardian: Among the first sights to greet visitors to Denmark on the descent to Copenhagen's airport is a sweeping arc of wind turbines rising from the harbor. From the airport, passengers can board an automatic Metro line that hustles them to the city center in just 15 minutes, crossing the path of the City Circle Line, a subway project that will place 85 percent of Copenhageners within 650 yards of a Metro station when the line opens in 2018.
Everywhere, visitors are greeted by streams of bicyclists;...