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.

How do we love all the children of all species for all time?

In the end, the question is not, how do we use nature to serve our interests? It's how can we use humans to serve nature's interest?'

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.

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.

You don't filter smokestacks or water. Instead, you put the filter in your head and design the problem out of existence.

I just think it is so delightful to see people, let their elbows free. I think the exuberance of it all is really exciting to me. It's a signal of the abundance of diversity and creative expression.