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Argo, I suggest you research a little more, start with a google search for "global dimming" then try one for "drought forestry burnoff". On a recent flight across bass strait I saw severe pollution extending all the way across the pond and up to our cruising altitude at approximately 30,000ft. In all my years I have never experienced such pollution. We have had 2 years of extended dry weather in Tasmania (from November through to April) conicident with huge increase in forestry burnoff in the north of our state. Take a look at the whole picture then make a conclusion.
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