Recycling is more expensive for communities than it needs to be, partly because traditional recycling tries to force materials into more lifetimes than they are designed for - a complicated and messy conversion, and one that itself expends energy and resources. Very few objects of modern consumption were designed with recycling in mind. If the process is truly to save money and materials, products must be designed from the very beginning to be recycled or even "upcycled" - a term we use to describe the return to industrial systems of materials with improved, rather than degraded, quality.

The problem carbon is that everyone thinks we have an energy problem, we don't. We have plenty of energy. We have a carbon problem. Carbon is a material, so we have a material problem, not an energy problem.

Modern culture appears to have adopted a strategy of tragedy. If we come here and say, I didn't intend to cause global warning, it's not part of my plan, then we realize it's part of our defacto plan because it's the thing that's happening because we have no other plan.

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

The Stone Age did not end because humans ran out of stones. It ended because it was time for a re-think about how we live.

So when you see a regulation against lead, because lead is a bad in a regulators mind, what does that mean? You are not telling us what is good, you are just tell us what you don't want, not what you do want.

We celebrate the cherry tree not for its efficiency but for its effectiveness - and for its beauty. Its materials are in constant flow, and all those thousands of useless cherry blossoms look gorgeous. Then they fall to the ground and become soil again, so there's no problem