Cities are huge energy-sinks, there is no getting away from it, it is part of their nature.

The same is true (even more so x2) of Suburbia, and also towns and villages and even many farms (cotton, tobacco, feed lots, etc.).

Denser cities are inherently energy efficient/capita.

BTW, New York City has a unique zero energy potable water source.

Best Hopes for Energy Efficient cities,

Alan

Denser cities are inherently energy efficient/capita.

Best Hopes for Energy Efficient cities,

We need cities to work. A future where cities don't continue to function isn't worth thinking about. Take the UK, if London can't still support the best part of 10m people in 2030 then we're in too much of a mess to proactively plan for. The 'hills' aren't anywhere near large enough to support the collapse of cities.