I think as designers we realize design is a signal of intention, but it also has to occur within a world and we have to understand that world in order to imbue our designs with inherent intelligence.

We have carbon in the atmosphere. That is a material in the wrong place problem. It's just like what I said about the lead. Lead in the biosphere is not good. Carbon in the atmosphere (over natural levels) is a problem.

In planetary terms, we're all downstream.

If we think about things having multiple lives, cradle to cradle, we could design things that can go back to either nature or back to industry forever.

It's going to sound strange probably. But I really like Frank Gehry's works.

Our concept of eco-effectiveness means working on the right things - on the right products and services and systems - instead of making the wrong things less bad. Once you are doing the right things, then doing them "right," with the help of efficiency among other tools, makes perfect sense.

Sustainability takes forever. And that's the point.