It has become appallingly obvious that our technology has exceeded our humanity.

Our imprint is now truly global. Our impact now truly profound. Our blind assault on the planet has finally come to alter the very fundamentals of the living world.

Some time this century, the day will arrive when the human influence on the climate will overwhelm all natural factors.

Everybody knew. Nobody admitted to knowing. If other people began to discuss it, you tuned them out, because what they were saying was both so obvious and so unthinkable. We are using up the Earth. It is almost gone.

for the first time in human history solitude is starting to fade away altogether.

Modern man has lost the option of silence.

Imagine the terrestrial timespan as an outstretched arm: a single swipe of an emery-board, across the nail of the third finger, erases human history. We haven't been around for very long. And we've turned the earth's hair white. Sh e seemed to have eternal youth but now she's ageing awful fast, like an addict, like a waxless candle. Jesus, have you seen her recently? we used to live and die without any sense of the planet getting older, of mother earth getting older, living and dying. We used to live outside history. But now we're all coterminous. We're inside history now all right, on its leading edge, with the wind ripping past our ears. Hard to love, when you're bracing yourself for impact. And maybe love can't bear it either, and flees all planets when they reach this condition, when they get to the end of their twentieth centuries.

We've had a long time to get used to the screams. Just as our civilizations expansion is marked by a widening circle of genocide, so too forests and all of their inhabitants precede us. Deserts dog our heels.

If the crisis that now confronts us is even more urgent than those of the early years of the century-and I believe it is this is because of wholly new factors peculiar to our own time. These are, first of all, the phenomenal growth of the human population, threatening to over-run its own environment in a way that can bring only deep concern to thoughtful students of population problems. The second factor is a corollary of the first: that as people and their demands increase, there is a smaller share of the earth's resources for each of us to use and enjoy. There is less clean water, less uncontaminated air; there are fewer forests, fewer unspoiled wilderness areas. The third reason is the introduction of new and dangerous contaminants into soil, water, air, and the bodies of plants and animals as our new technology spreads its poisons and its discarded wastes over the land.

We live in a swiftly changing world. Industrial and water-engineering projects, cutting of forests, plowing up of virgin lands, the use of poisonous chemicals — all such ac­tivity is changing the face of the earth, our "habitat." Scientific study of all the interrelationships in nature and the consequences of our interference clearly lags be­hind the changes. Large amounts of harmful wastes of industry and transport are being dumped into the air and water, including cancer-inducing substances. Will the safe limit be passed everywhere, as has already happened in a number of places?

I do believe ... that human population pressure--the sheer number of people on this planet--is the single most important cause of the degradation of the natural environment, of the progressive extinction of wild species of plants and animals, and of the destabilization of the world's climatic and atmospheric systems.
The simple fact is that the human population of the world is consuming natural renewable resources faster than it can regenerate, and the process of exploitation is causing even further damage. If this is already happening with a population of 4 billion, I ask you to imagine what things will be like when the population reaches six and then 10 billion.... All this has been made possible by the industrial revolution and the scientific explosion and it is spread around the world by the new economic religion of development.

We now live in a technologically prepared environment that blankets the earth itself. The humanly contrived environment of electric information and power has begun to take precedence over the old environment of "nature." Nature, as it were, begins to be the content of our technology.

You can observe for yourself the degradation of the air and water around us. The earth has a limited capacity to absorb the waste products of human industry, and with enough development, the planet could even be rendered uninhabitable.

Earth has been regarded for centuries as a giant self-regulating machine, absorbing all changes, great and small, and diluting their effects until they become invisible on a global scale. Mankind has taken that stability for granted. Careless of consequences, we have watched as forests were cleared, lakes poisoned, rivers dammed and diverted, mountains leveled, whole plains dug out for their mineral and fuel content. And nothing disastrous happened. Earth tolerated the insults, and always she restored the status quo.
Always—until now. Until finally some hidden critical point has been passed. The move away from a steady state is signalled in many ways: by increasing ocean temperatures, by drought and flood, by widespread loss of topsoil, by massive crop failure, and by the collapse of worldwide fishing industries.