'Nations talk, but cities act' on green policies

The European Union recently agreed to reduce its carbon emissions by at least 40 percent in 2030, a target its leaders hailed as ambitious.

But individual cities are going much further.

By the time the EU has reached its climate target, Copenhagen, as one of the most green conscious EU capitals, hopes to have put worrying about carbon emissions behind it.

That is, if the Danish capital's local government manages to achieve its ...