The city of Copenhagen in Denmark will go green this year where Christmas celebrations are concerned, and we’re not talking about the colour of its trees. In fact, their traditional Christmas tree set up at their City Hall Square will boast energy-efficient LED lights that are powered by people, where 15 bicycles are available for anyone and everyone to pedal in order to power all 700 LED bulbs dotted along the entire tree. Good way to keep warm in the freezing weather as well, eh?
不错的设计，
中国人为什么没有这样搞。天天开会讲环保。还不如搞这个。呵呵。