If mass media, social isolation in the suburbs, alienating workplaces and long car commutes create a bunker mentality, the Internet does the opposite.

It's not just enough to survive. We've got to make something better than what we've got.

Deep walkability describes a city that is built in such a way that you can move from one area to another on foot, on bicycle, on transit and have an experience that remains a pleasant one, that you feel you are welcome not just in the neighborhood but moving between neighborhoods.

Carbon zero simply means that the emissions you are releasing either are zero or balance out to zero.

Urban retrofitting: creating different sorts of spaces and uses out of places that are already there.

The denser places get, the lower the amount of energy people use to get around it.

We get so little news about the developing world that we often forget that there are literally millions of people out there struggling to change things to be fairer, freer, more democratic, less corrupt.