Hi Jenny,
Yes, we absolutely do have a responsibility to take care of our planet. It is pure insanity to fill it with filth and pollutants that shorten our lives and destroy the natural beauty of the landscape so that our children and grandchildren never get to enjoy it.
There is much ongoing debate about the effects of pollution on the ozone layer. More and more scientists are beginning to strongly suspect that it, too, is cyclical. The biggest holes in the ozone layer are over the least populated areas on earth - the Arctic and the Antarctic.
Furthermore, although chlorofluorocarbons have been banned for many years, the effect of the ban has been almost negligible. We removed a product that was actually quite environmentally friendly in the quantities mankind produced and used, and replaced it with many products that, while ozone friendly, are actually more harmful than the products they replaced.
In a study (sorry - I haven't got the source at the moment) that came out some twenty years ago or more, scientists discovered that plankton was responsible for more than 90% of the chlorofluorocarbons that go into the atmosphere!
The removal of old forests can be very healthy for the planet - if they are replanted and allowed to regrow. It has been proven quite clearly that young, vigourous growth removes far more carbon from the atmosphere than old, mature forests, AND provides much more food for animals. One thing that must be remembered, though, is that crops such as grass, sugar cane, soy, etc., are not the same as trees and do not do the same job as trees. Pavement, of course, is, in itself, a pollutant!
We DO have the ability to make this planet a much cleaner, nicer place to live. We COULD share much more of the food we grow in countries with abundance, could run our vehicles on clean fuel such as hydrogen, could stop shooting up countries around the globe with depleted uranium and all the other chemicals that go into weaponry, could walk more, bike more and drive less.... but due to our nature, I think most of us will wait for the "other guy" to do it.
I think, perhaps, that global warming, whatever might be the cause, is the least of our worries.
God bless,
Dave
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