The Peace Weekly recently editorialized on the many environmental  problems facing our society. Earth Day, April 22nd, commemorates our  newly found ecological consciousness that began, according to the  editorial, in 1969 when a devastating oil spill in California  contaminated  many of the beaches on the West coast. From this incident the  grass-root movement took hold and spread to many other countries of the  world.
This will be the 40th year since the first Earth Day of  1970 sought to alert the general public of the dangers to the  environment.  Buying water instead of drinking water from the the tap is now an  accepted practice in many societies. And, increasingly, we are eating  organic food to avoid the heavily processed foods on market shelves and  the pesticide-sprayed and chemically fertilized produce from our farms.  Our air is polluted with green-house gases and acid rain, and now the  atmosphere has been further polluted with radioactive  particles. Even in Korea, schools have recently given time off from  classes  because of the fear of radioactive rain. 
Humans are the  ones that have caused the problem. God put everything in order and  determined it to  be good, and told us to preserve and manage it. This  has  not been something we have done well, destroying much of what was  given to us. We as Church should reflect on what we have done as  members of the larger community. Do we see only the earth as a place for  humans, and  consider material progress and financial betterment as the only values  of  interest? Have we as  Church gone along with this thinking?
Many still see the  preserving of our environment  as something foreign to our faith  life. Humans appeared late  on the earth but  have destroyed much of what we were  given. It is time for us to realize that the preservation of the environment is our  work and we have to be active in its fulfillment.  
The  Catechism of the Catholic Church expresses it clearly (2415):  The  seventh commandment (thou shalt not steal) enjoins respect for the  integrity of creation. Animals are by nature, like plants and inanimate  beings, destined for the common good of past, present, and future  humanity. Use of the mineral, vegetable, and animal resources of the  earth cannot be divorced from respect for moral imperatives. Man's  dominion over inanimate and living beings granted by the Creator  is not absolute; it is limited by concern for the quality of life of  all, including generations to come. It requires a religious respect  for the integrity of creation.