>> This is pure power politics and a huge deep pocket for taxes and other 
>> extortions. We are bloody ants on the planet in comparison to the overall 
>> picture.  Oliva
>>
>
> I agree it is primarily power plays.

Personally, I tend to think that we are responsible. We find plastics/soots 
in the arctic/antarctica. If you think about the iridium layer which 
blanketed the earth though to be deposited after the large (single event) 
meteorite/comet hit the earth theorized to signal the end of the dinosaurs 
(presumable from climatic change), it seems unsurprising that man is capable 
of a tremendous spread of material or gases around the planet - every day, 
year in and year out. To think that it has no effect seems to me to be 
wishful thinking.

Marilyn