CORPUS CHRISTI, TX (Catholic Online) - The Bible sees man as having been given dominion over all things.  The Compendium of the Social Doctrine of the Church however clarifies that it is a "pretension" to think that this is an "unconditional dominion," one that may be "heedless of any moral considerations." 

All human activity-including that activity that relates to how man deals with his environment-is subject to moral consideration.  There is no realm where man may act without regard to morality.  There is therefore a morality of ecology.

Without doubt, man has a tendency to use, even exploit, those natural resources over which he gains control.  This tendency has been exacerbated, even institutionalized, as the result of a complex historical and cultural process.  Necessarily, this exploitation can affect his environment, as wherever man exploits, he leaves the detritus as it were of his exploitation.

Modernly, as a result of both the increase in the population of man and his ability better to exploit the natural world through technology, we confront a serious threat to our environment, even a "critical point" in our history which mandates action. (Compendium, No. 461)   "Nature appears as an instrument in the hands of man, a reality that he must constantly manipulate, especially by means of technology." (Compendium, No. 462)

In understanding our relationship to nature at large, we have to be sensitive to inherited prejudices or patterns of thinking.  Particularly during the Industrial Revolution, man's dominion over nature was given a "reductionist conception," one largely predicated upon a false supposition that "an infinite quantity of energy and resources [were] available," that it was "possible to renew them quickly," and that "negative effects of the exploitation [could] be easily absorbed." (Compendium, No. 462)  We were, and still to some degree are, blinded to the effects of the constant "strokes of havoc," our constant hacking and racking on, hewing on and delving into, the environment.  In the words of Gerard Manley Hopkins's "Binsey Poplars":

O if we but knew what we do
When we delve or hew -
Hack and rack the growing green!
Since country is so tender
To touch, her being só slender,
. . . .
After-comers cannot guess the beauty been.
Ten or twelve, only ten or twelve
Strokes of havoc únselve
The sweet especial scene,
Rural scene, a rural scene,
Sweet especial rural scene.

One of the more egregious instances of this reckless neglect of nature I remember reading, one typical of what the Compendium of the Social Doctrine of the Church is referring to, is related by Donald Culross Peattie in his book, A Natural History of North American Trees.  He describes the exploitation of the beautiful pecan trees of Texas.  Peattie tells us that the wild Pecan trees in Texas were hugeous, and that the most "gigantic specimens" were cut down by harvesters without so much as a second thought so that boys could "gather the nuts from the branches of the fallen giants."  "Thus it came about," Peattie rues, "that the wild Pecan tree had become rare before men began to realize how much was lost."

Underlying this reckless attitude to the environment are three things: a mechanistic view of nature ushered in by the Enlightenment, a utilitarian ethic which measures everything in terms of cost and benefit, and the consumerism mentality which modernly has reached absurd proportions.  Through a combination of these philosophical, historical, cultural, and individual attitudes, we have alienated ourselves from our environment.  "Primacy is given to doing and having rather to being, and this causes serious forms of human alienation."  (Compendium, No. 462).

The problem is not science or technology itself; it is rather what the Church in the Compendium calls "scientism and technocratic ideologies" that cause the problem of man's alienation from his environment and feed the lack of prudence, indeed even reckless irresponsibility, in exploiting the goods of the earth.

While recognizing the serious environmental problems confronting man, the Church warns us of going overboard in our reactions.   We see this attitude in many environmentalists, in many intellectual leaders of the "green" parties and "New Agers."  In addressing the problem, there is a line we ought not to cross.   We must not "absolutize nature and place it above the dignity of the human person himself."  Indeed, there is a notable tendency in many ecologically-concerned groups to "divinize nature or the earth."  (Compendium, No. 463)

As the Compendium frames its teaching:

"The Magisterium finds the motivation for its opposition ...