A good quote by the Dalai Llama, out of his book "Ethics for the New Millennium."
"The only clear thing is that we humans are the one species with the power to destroy the earth as we know it. The birds have no such power, nor do the insects, nor does any mammal. Yet if we have the capacity to destroy the earth, so too do we have the capacity to protect it."
This is how I feel about man-kind