Comment posted on Sci Am website in reply to "350 ppm" initiative article by "greatmag"

The relationship of atmospheric carbon and global warming is unproven. Iceland and Greenland supported much more agriculture one thousand years ago than it does now. They were much warmer than they are now. Yet there was no industry to speak of. England was famous for better wines than France now grows at around the same time. Going back even further the Florida keys were underwater reefs until the ocean levels fell. These climate changes are the natural outgrowth of the variable heat engine in our sky. The sun. The CO2 levels have been rising every year since 2000 yet we can observe the planet's temperature is cooling every year. Our planet naturally goes through cycles of warming and cooling. The people that want you to adopt a more primitive lifestyle to "save" the planet are nothing more than tyrants. Their leaders (Gore, Kennedy, Hansen) are in it for 2 things. Money and power. Do you see them leading the lifestyle they want you to live? Since the renaissance we have been fighting a war against intellectual and physical tyranny. Are you willing to let these frauds reduce you to serfdom and slavery?