Quite a convincing speech by Alex Steffen at TED. His starting point is that urbanization doesn't necessarily have to go hand in hand with energy waste. In fact, the denser a place (in terms of # people per square km), the less emission is would entail. Quite logical come to think of it: the more you find things you need in your immediate environment, the less you have to travel to obtain it.
Strangely enough this would lead to the conclusion that it would help if even existing cities get more people living in it... Sounds weird at first, but Alex provides some nice evidence of how this could be done in a sustainable way (whether it's more socially livable is another question though, not addressed by him):
Good insights from the video. Urban planning is often an overlooked necessity, usually in the name of capitalization.
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