I think the internal combustion engine will disappear from the streets of our cities in the next thirty years because transportation will be mass transportation, or probably electrical power.

The month of April 2000 will provide an unprecedented showcase for the clean energy options available to individuals, businesses and the government, ... As tens of millions of people take action to support clean energy during Earth Month, the 'New Energy for a New Era' campaign will catapult us toward a clean and affordable energy future.

The fights in future will not be over whether we ought to do something, but over how we ought to do it, and that's a reasonable debate.

Nuclear war is not inevitable, but major degradation of our environment with grave consequences is inevitable unless we reverse the trend.

Loads of chemicals and hazardous wastes have been introduced into the atmosphere that didn't even exist in 1948. The environmental condition of the planet is far worse than it was 42 years ago.

The most important environmental issue is one that is rarely mentioned, and that is the lack of a conservation ethic in our culture.