I doubt nuclear power will play a much larger role than it does now.

The climate, financial and national security crises are all connected. They share the same cause: Our [the USA's] absurd dependency on foreign oil. As long as we need to spend billions of dollars each year to buy foreign oil from state-run oil companies in the Persian Gulf, our problems of a trade deficit, a budget deficit and a climate crisis will persist.

We all know the leopard can't change his stripes.

It seems an easy choice - sacrifice the tree for a human life - until one learns that three trees must be destroyed for each patient treated. Suddenly we must confront some tough questions. How important are the medical needs of future generations?

Of all the works of civilization that interfere with the natural water distribution system, irrigation has been by far the most pervasive and powerful.

I was recently on a tour of Latin America, and the only regret I have was that I didn't study Latin harder in school so I could converse with those people.

The spiritual sense of our place in nature... can be traced to the origins of human civilization... The last vestige of organized goddess worship was eliminated by Christianity.