This week the Mayor of Barcelona, Xavier Trias, activated Barcelona’s Christmas lights in Plaça Catalunya. Thanks to LED technology, Barcelona is upping the ante while many cities cut back on their Christmas decorations. New LED technology means the city is able to put on the lights for longer at less cost; the Christmas lights go on two days ahead of schedule, and off a day later than usual but the cost is down from 200,000 euros to 10,000 euros. This innovation is keeping the streets ...