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

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

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

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

People in Slow Food understand that food is an environmental issue.

We learned that economic growth and environmental protection can and should go hand in hand.

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

Much of the debate over global warming is predicated on fear, rather than science.

I did not become a vegetarian for my health, I did it for the health of the chickens.

When we try to pick out anything by itself, we find it hitched to everything else in the universe.