We won't have a society if we destroy the environment.

Birds are indicators of the environment. If they are in trouble, we know we'll soon be in trouble.

I have a private plane. But I fly commercial when I go to environmental conferences.

We don't have to sacrifice a strong economy for a healthy environment.

If we do not permit the earth to produce beauty and joy, it will in the end not produce food, either.

Our world faces a true planetary emergency. I know the phrase sounds shrill, and I know it's a challenge to the moral imagination.

Never doubt that a small group of thoughtful, committed citizens can change the world indeed, it's the only thing that ever has.

Not all is doom and gloom. We are beginning to understand the natural world and are gaining a reverence for life - all life.

When we realize we can make a buck cleaning up the environment, it will be done!

Local innovation and initiative can help us better understand how to protect our environment.