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

It seems that every time mankind is given a lot of energy, we go out and wreck something with it.

Unless we keep this planet healthy, everything else is for naught.

By polluting clear water with slime you will never find good drinking water.

No one should be able to enter a wilderness by mechanical means.

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

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

You may be able to fool the voters, but not the atmosphere.

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

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