Here we are, arguably the most intelligent being that's ever walked planet Earth, with this extraordinary brain ... and yet we're destroying the only home we have.

Chimpanzees can be quite political.

Mainly because as women's education increases all around the planet, we find that family size tends to drop.

And always I have this feeling--which may not be true at all--that I am being used as a messenger.

The least I can do is speak out for the hundreds of chimpanzees who, right now, sit hunched, miserable and without hope, staring out with dead eyes from their metal prisons. They cannot speak for themselves.

Farm animals feel pleasure and sadness, excitement and resentment, depression, fear, and pain. They are far more aware and intelligent than we ever imagined...they are individuals in their own right.

I believe that we have more capability than any other creature to control our biological inheritance - and we do so most of the time.