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Politics : The Environmentalist Thread -- Ignore unavailable to you. Want to Upgrade?

To: Elmer Flugum who wrote (28872)	4/28/2010 7:03:26 PM
From: Maurice Winn	1 Recommendation Read Replies (1) \| Respond to of 36918

Len, the environmental changes are easily identified and the causes of climate change easily identified too. We are both environmentalists and liberals though I'm a 19th century liberal rather than the 21st century Big Brother, Big Government, socialist kleptocratic variety. I have been an avid environmentalist for over half a century starting as a result of my immediate environment being destroyed by large scale pollution - the air was made stinking by the sewage treatment works nearby, the air filled with giant columns of umpty billion midges, dying inches thick on window sills, the lead on the house went black from sulphur, the Manukau harbour was polluted and died - I mean totally dead though perhaps there were some invisible anaerobic bacteria surviving in the toxic sludge. The main cause of short term climate change [over 100,000 years] is albedo variation due to expansion and contraction of snow and ice cover, chlorophyll cover and deserts, with clouds being a major variable along with solar activity. It's a natural oscillation. There is also volcanic activity, ocean current changes and other effects of a more minor nature. Longer term, tectonic plate movement makes a big difference in albedo [oceans absorbing lots of light and therefore heat and land masses, especially snowy ones, reflecting light]. Earth orbit makes a difference too. There is cosmic ray theory about cloud formation too. Human CO2 might be providing a bit of warming [not even 1 degree over 100 years of vast carbon combustion] - if so, it's a net good thing and especially when plant growth is considered. Mqurice