If global warming is man-made then ignorance must be a root problem, and I will be contesting it in my Flat Earth Theory series.
There are clearly vested interests who fight hard to obscure the fact that the fossil fuel emissions increase the onset of climate change (we just have to see how the US, Saudi Arabia and Australia stonewalled at the Montreal UN Climate Change Conference), and I always find it fascinating how their spin finds itself into the mouths of the general public.
Glitch, a regular has forwarded the theory that increased solar activity is the driver behind the global warming we observe:
I'm sorry - but I believe that the earth's temp is PRIMARILY driven by variations in the Sun's output.
If EVERY CAR/TRUCK/PLANE/ELECTRIC POWER PLANT was turned off TODAY, I do not believe it would change the 'global climate' - sea levels will go up and go down...and there is NOTHING humanity can do about it.
Glitch has a good point, the sun is indeed the greatest influence on the earth's temperature, but that is not the whole story. I will try to illustrate with an example. If I go sunbathing, the sun will initially be the greatest influence on my body temperature, which would rise. So far Glitch's argument is supported in this example. But then my pores would open in response to my body's increased temperature and I would sweat. This sweating will cause evaporation thus cooling down my body and keeping it at an average temperature of around 37 degrees Celsius. The biological name for a mechanism for maintaining equilibrium is called homeostasis. Without a homestatic mechanism for cooling I would just heat up, cook and die.
If we take the view that the earth is an organism of sorts, as in the Gaia theory of James E Lovelock, then we can attribute Gaia with a homeostatic mechanism that keeps her temperature at an equilibrium that sustains life. Gaia's temperature chart for the last 1800 years (Mann, et al, 2003) indicates that this is indeed what happens.
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