The government now calls "Global Warming" "Climate Change". This is appropriate since warming is only one step in the overall process. I first got a coherent picture of the process from a lecture by Hans Blix. Since then, new data has been contributed by an Australian research team from 2001 data taken during and after the 9/11 tragedy.
The story gets complicated; so let me tell it in two parts. First let us examine the "what" of the process and then the "why" of the process. The earth has experienced 17 Ice Ages. NASA has provided a graph of the last four. The "what" sequence is like this:
And then, it starts all over again.
The "why" is pretty obvious except for one item. (*** The discussion of the thermo-hayline cycle goes here ***)
CONCLUSIONS Climate change doubters have points that sounds reasonable on their face. They say that the weather is always changing. That there was a mini ice age 400 years ago that went away. The North Passage that allowed ships to go from London to Seattle via the North Pole existed for a while and then closed. And now, the Passage has just reopened a few years ago. Hurricanes frequency varies from year to year. This is all correct. But, there is a bigger scheme that involves thousands of years. Global Warming may be delayed for a while by Global Dimming. After that, another ice age is coming.