Biodiversity can't be maintained by protecting a few species in a zoo, or by preserving greenbelts or national parks. To function properly, nature needs more room than that. It can maintain itself, however, without human expense, without zookeepers, park rangers, foresters or gene banks. All it needs is to be left alone.

What Clinton did with Lewinsky was despicable but was no threat to the nation. That he lied about it repeatedly and to the public is a reason for us to cease to trust him and for him to resign.

Mesarovic and Pestel are critical of the Forrester-Meadows world view, which is that of a homogeneous system with a fully predetermined evolution in time once the initial conditions are specified.

A knowledgeable and courageous U.S. president could help enormously in leading the world's nations toward saving the climate.

The world is a complex, interconnected, finite, ecological - social - psychological - economic system. We treat it as if it were not, as if it were divisible, separable, simple, and infinite. Our persistent, intractable global problems arise directly from this mismatch.

Since the Earth is finite, and we will have to stop expanding sometime, should we do it before or after nature's diversity is gone?

A good leader sets the right goals, gets things moving, and helps us to discover that we already know what to do.