Quote:
Originally Posted by Von Due
As for humans effecting Earth, just look at the ozone layer. There were big holes up there then in the 1980's there was the Montreal Protocol. Now the ozone layer is healthier than ever. We absolutely can make a difference.
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I have not doubt humans can make a difference....either positive or negative. Just stripping forest of trees for whatever the wood is to utilized for causes changes regionally and globally. Emissions from vehicles today are totally on the other end of the spectrum compared to vehicles 3 decades ago and certainly beyond. R-12 refrigerant is a ozone killer. Now cars are filled with friendlier R-134.
In my mind, eventually population growth will need to be curtailed as this mud ball we call earth can not continue to support human population growth as seen.