In addition to this, they already have a fuel cell car on the road in Japan. It is subsidized from within the corporation because they are still at a high cost.

Toyota was the first to put a commercial fuel cell powered car on the road, and I have no doubt that Toyota will continue to be in the front lines in the development of competitive fuel cell vehicles.

After all, sustainability means running the global environment - Earth Inc. - like a corporation: with depreciation, amortization and maintenance accounts. In other words, keeping the asset whole, rather than undermining your natural capital.

A shift is necessary toward lifestyles less geared to environmental damaging consumption patterns.

I am on the board of corporations who contribute both to environmental problems and their solutions. And I am on the NGO side: the Earth Council and other organizations.

I've developed a huge regard for Toyota for its environmental awareness, for its immense commitment to research and development in this field, and for its leadership in developing hybrids which others are now following.

One of the things that I've always thought I would like to do is to develop an environmental index. Then people can measure their own environmental performance on an index as they do in other ways.

Ted Turner is still a leader. And he sets a great example. His ability financially has been reduced, but his influence and his example still is an important asset to the whole environmental movement.

Also, it is interesting that developing countries, with China and India perhaps in the lead, where the future of the global environment will be decided are now on board with the case for sustainable development.

We owe at least this much to future generations, from whom we have borrowed a fragile planet called Earth.