Dear Annabel,

Either you are very young or you have never watched PBS or any of the science channels. Most folks are aware of the great natural occurring ice age cycles. But what we are fighting now is the man made warming trend within those natural occurring cycles.

But you did do a fine job of explaining climate change to the less informed.

However, climate change is only second on the list of things that threaten human existence. Those thousands of nuclear tipped missiles on land and under the sea resting on hair trigger alert, with just one tiny technical glitch or political miscalculation, are still poised to wipeout humanity in the blink of an eye.