In nature nothing exists alone. - Rachel Carson

Such poisoning of waters set aside for conservation purposes could have consequences felt by every western duck hunter and by everyone to whom the sight and sound of drifting ribbons of waterfowl across an evening sky are precious.

But the stream of time moves forward and mankind moves with it. Your generation must come to terms with the environment. Your generation must face realities instead of taking refuge in ignorance and evasion of truth. Yours is a grave and a sobering responsibility, but it is also a shining opportunity. You go out into a world where mankind is challenged, as it has never been challenged before, to prove its maturity and its mastery-not of nature, but of itself. Therein lies our hope and our destiny. "In today already walks tomorrow."

we are still in the warming-up stage following the last Pleistocene glaciation — that the world’s climate, over the next thousands of years, will grow considerably warmer before beginning a downward swing into another Ice Age. But what we are experiencing now is perhaps