The fact that the earth has been much colder and much warmer historically than we are used to should be cause for MORE CONCERN, not less. If it was very static, I would not worry about human activity affecting it much. The history tells us that it can change dramatically.
Human activities are pumping large amounts of greenhouse gases into the atmoshere in a very short amount of time - geologically speaking. I think it is silly to assume that that won't have signficant effects to the climate.
I am 47 years old, I suspect I will be seeing dramatic changes to the climate (assuiming I live another couple decades), certainly my sons will. I just hope that the feed-back mechanisms scientist talk about (e.g., methane release from decaying permafrost) don't don't turn Mother Earth into Mercury.
But alas there is really nothing to be done about it. Most people don't even pay attention, and most of those that do rationalize that there - of course - could not be a problem so I don't need to do anything about, or they just don't give a sh!t.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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