Creating Sustainable Cities
7:49
What Is the Most Sustainable City in the World?
15:57
Germany's "Green" City (with more bikes than cars!)
28:26
Copenhagen - The world’s greenest capital city? | DW Documentary
13:03
What Can UK Learn From Worlds Most Sustainable Cities?
13:09
Tree-Covered Skyscrapers Aren't Actually That Green
17:01
Why living in Canada has become Impossible
5:26
What happens if you cut down all of a city's trees? - Stefan Al
14:11