These are not exhortations from overwrought extremists, but carefully phrased warnings from some of the world's finest scientists.

There was almost a universal acceptance of unhealthy conditions. Sulfur dioxide in smokestack emissions were the price, or smell, of prosperity.

Listen up, you couch potatoes: each recycled beer can saves enough electricity to run a television for three hours.

I feel more confident than ever that the power to save the planet rests with the individual consumer.

By the year 2000, such renewable energy sources could provide 40 percent of the global energy budget; by 2025, humanity could obtain 75 percent of its energy from solar resources.

When civilization stands at the edge of a cliff, a step forward doesn't make much sense.

It is already too late to avoid mass starvation.

We presently have the technology ... fuel cells, solar cells, hydrogen ... the opportunities are amazing for clean energy.

I suppose I'd characterize myself as having a faith-based optimism. My faith is parental and Darwinian.

We got everyone's attention, but we didn't solve any environmental problems.

An acre of windy prairie could produce between $4,000 and 10,000 worth of electricity per year - which is far more than the value of the land's crop of corn or wheat.

The story of how I left Huckleberry begins -- as do all worthy stories -- with a goat

Robin Williams was an airman, a doctor, a genie, a nanny ... and everything in between. But he was one of a kind.

I remember 9/11; we had 'Comics Come Home' about a month after those events. That night, even the comedians were concerned. Would the audience be ready to laugh? It was a release for everyone.

At the bottom of all these noble races the beast of prey, the splendid blond beast, prowling about avidly in search of spoil and victory.

Why do we have to be a military superpower? Why can't we be a humanitarian superpower?

One of the great problems with Americans is that - being a decent people - they assume that everyone else is equally decent.

Perhaps out there, somewhere, someone is sighing for your absence; and with this thought, my soul begins to breathe.

Only a ninja can stop a ninja.

Vegetarianism is a way of life that we should all move toward for economic survival, physical well-being and spiritual integrity.