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| Jan 20, 2010 3:21 am |
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re: re: The Reality of Climate Change |
Reg Charie
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Thomas said:
>The essential issue, from my perspective, is: To what extent does human activity cause irreversible long team changes to the earth's climate.
>>And my answer is: as a practical matter, the effect of human activity on earth's climite is negligible.
We must live in different world Thomas.
I have seen whole forests turn brown due to acid rain.
I have watched wildlife and dwindle and species hunted/fished into oblivion.
I have seen the destruction of countless habitats, including some belonging to humans. (They paved paradise and put in a parking lot).
I have sailed through countless miles of plastic and debris in the Sargasso Sea.
I have seen a switch from trusting tap water to buying bottled.
I've seen what happens to the land when it is strip mined, over farmed and over forested.
I've seen fresh clean water polluted by the effluent of cities. Just check the beach reports around Toronto in the summer.
How about the holes in the ozone layer?
And you say we don't have any effect?
Do we have ENOUGH of an effect to cause global warming should be the question.
Species are extinct, whole ecosystems are being removed from existence, does stripping SA of it's rain forests put more carbon dioxide in the air?
Look at this paragraph:
"All trees, nearly all plants from cold climates, and most agricultural crops respond to increasing atmospheric CO 2 levels by increasing the amount of CO 2 they take up for photosynthesis . It is believed that the increased uptake in land plants from rising atmospheric CO 2 levels roughly counterbalanced the CO 2 released from cutting down tropical rain forests and other agricultural practices in the decade of the 1980s. In the 1990s, the land biosphere was estimated to take up approximately 1 Pg more CO 2 than it released each year.
Read more: Carbon Dioxide in the Ocean and Atmosphere - sea, depth, oceans, important, system, plants, marine, oxygen, human, Pacific http://www.waterencyclopedia.com/Bi-Ca/Carbon-Dioxide-in-the-Ocean-and-Atmosphere.html#ixzz0d7Nbnv1g
"Today, CO 2 concentrations in the atmosphere are increasing as a direct result of human activities such as deforestation and the burning of fossil fuels (e.g., coal and oil). Over the past 150 years, CO 2 concentrations in the atmosphere have increased by as much as 30 percent (from 280 to 370 ppm).
Are we having a cumulative effect? Sure looks like it.
As the oceans warm, and they are warming, they lose their ability to scrub co2 and switch into reverse, releasing instead of absorbing.
As they release more, as humanity becomes more developed and uses more co2 producing processes the imbalance grows.
As for a governing power stepping in and setting things "right" - just bloody good luck.
I don't think I will be around to see it.
There is much too much at stake to even seriously consider a drastic reduction in the carbon footprint.
Too much money, too much effort, reduced profit margins, investor's demands for high returns, all wield power in slowing the change to green processes.
The day will come as a matter of survival, but at what expense? The deaths of billions?
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