When It Comes to CO2 in the Atmosphere, Let Us Learn from the Ice Ages

    What brought on the ice ages? Would you believe it likely was an imbalance of carbon dioxide in the air? 

   In the 1970s, scientists discovered that the same greenhouse gas that we are having trouble with today -- that would be carbon dioxide -- was about 30 percent lower during the cold periods of the ice ages. Greenhouse gases, as you know, trap heat in close to the earth. So, even as the planet will warm if there is too much greenhouse gas, it will cool if there is not enough.

   There are different theories on what caused the carbon monoxide levels to decline. But the point is, there must be a balance -- a delicate balance. Whether your idea is that it is Mother Nature, God, or happenstance, we should be grateful the carbon dioxide balance is such that life on this planet is habitable. 

   And, we should not want to disturb the delicate balance. Let us learn from the ice ages. 

(Index -- Climate change info)