I think we're going to start to see a new model of civic advocacy where people get together once in a while to protest, but it's more about an ongoing, sustained engagement in issues, networks and communities about which people care.

At its very heart, Worldchanging is about using the best of people's new ideas, bringing them together and applying them to the massive problems that we all face.

Cabbies in particular seem to like discussing the fate the Earth.

There is no such thing as garbage, just useful stuff in the wrong place.

We have to craft new political realities, not only in places like India, Afghanistan, Kenya, Pakistan, but here at home as well. Another world is possible.

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.