Finally, since human beings are uniquely capable of producing materials not found in nature, environmental degradation may be due to the resultant intrusion into an ecosystem of a substance wholly foreign to it.

It is simply economically impossible to require controls that even approach zero emissions.

Environmental concern is now firmly embedded in public life: in education, medicine and law; in journalism, literature and art.

Earth Day 1970 was irrefutable evidence that the American people understood the environmental threat and wanted action to resolve it.

The first law of ecology is that everything is related to everything else.

The AEC scientists were so narrowly focused on arming the United States for nuclear war that they failed to perceive facts - even widely known ones - that were outside their limited field of vision.

As the earth spins through space, a view from above the North Pole would encompass most of the wealth of the world - most of its food, productive machines, doctors, engineers and teachers. A view from the opposite pole would encompass most of the world's poor.