The Earth as a guinea pig?

Article from:

UNITED STATES HISTORY:
SEARCH FOR FREEDOM
By
Richard N. Current
Alexander DeConde
and
Harris L. Dante

In this article we read as this:
What will Earth´s fate be? This was a question that plagued averge Americans as well as scientists during the 1960´s and early 1970. For every prophet of doom, there was a corresponding prophet of bliss. As time passed, however several things became clear.
First it was obvious that no easy solutions would be found for Earths´s enviromental problems. Scientists cannot study the enviroment in a test tube. Earthh is too big, and too many uncontrollable (and often invisible or unoticed) forces are at work to make such study possible.
Second every solution produces a new set of problems. The automobile may have eliminated horse droppings and dead horses from city streets, but it also increased the possibility that city dwellers would contract lead poisoning or respiratory diseases. It also seriously affected land and energy resources.
Third, even when likely solutions appear, there are few ways to make people accept them. Most ecologists believe that limiting poppulation growth is the most important step in solving Earth´s enviromental problems. But many economists believe that growth is necessary. Moreover, among many of the world´s peoples, babies are lookd upon as a form of wealth. People with these beliefs are not likely to support efforts to limit births.
Fourth, concern for the enviroment cannot end at national boundarie. Earth, like a spaceship, has only limited resources that must be recovered, recycled, and reused. If only one country passes tough pollution-control laws, industries may move to where the laws are less strict. This might improve the economic situation of the people in the newly industrialized country, but it would only shift the pollution problem. The United States, with less than 6 percent of the word´s population, produces more than 60 percent of the world´s pollution. If the other 94 percent of Earth´s people became equaly industrialized and equally wasteful,
THE PROPHETS OF DOOM WOULD HAVE THEIR DAY
____________________________________________________________________________________

My opinion?

They asked themselves a very good important question in those days, but was it good for the future of humanity? Does that question has aything to do with the horrors we see today?

To this date 2007 from the 1960´s still, probably the efforts to improve the Earth´s enviromental problems are the same and even probably worst.
Contamination of land, water and air, I could give a category (WORST THAN EVER)
Land don´t produce as before,
The water is not healthy
and
The air we breath is too contaminated
What does all of this brings to us?
Less food for the people of this planet, more quemicals to the water, and
more diseases of the lungs, heart and cancers, deaths, atributed to the quemicals unknown to us, plus, the death of children, animals, plants and trees and all spicies and
and the creatures of the oceans.
SAD? ANY QUESTIONS? ARE WE GOING TO DO SOMETHING ABOUT THIS?
OR
ARE WE JUST GOING TO SIT THERE AND WAIT FOR DOOMSDAY?

Note: Babies don´t have to be seen as a form of wealth any more,
they just die by the dozen every single day.
THINK OF THAT ONE TOO.