- Great parts of North America were covered by huge, two mile thick, sheets of ice just 10,000 years ago.
- Mankind did not exist in sufficient numbers at that time and did not have the technology to influence the climate.
- Many people have no clue that the Great Lakes were created by an ice sheet just 10,000 years ago. The last of the sheet didn't recede until about 5000 years ago.
Take a look at the image at the top of this post from http://upload.wikimedia.org/wikipedia/commons/b/b0/Glacial_lakes.jpg
The ice sheets have been slowly and surely receeding over the last 10000 years. The Industrial age only started in the 1800's or so. Europeans have only been in North America in any numbers since about the 1600's. (Yeah, I know a couple of Vikings made it here earlier but that was a mere handful of people).. No matter how much the cult of global warming doom tries, there is no way that they could show a legitimate cause and effect relationship between man and the receeding ice sheets.
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