When you have a vision of where you need to go, it sounds utopian. But when you get to the tipping point, your understanding switches.

Think global, act local.

I still do not understand why we don't have people on the streets every single day raising their voices for climate.

We have to get to the point where each individual, each corporation, each community chooses low carbon, because it makes fundamental sense. It should become a no-brainer.

We are just about to cross the 400 parts per million threshold.

We will move to a low-carbon world because nature will force us, or because policy will guide us. If we wait until nature forces us, the cost will be astronomical.

Each building should produce as least as much energy as it's going to need, and have more to put on the grid. They should be using all of the natural light and natural heat.