[Sluggo]

CO2 saved us from the snowball Earth, we should set it free from its hydrocarbon bonds to allow alligators to return to the Canadian Arctic archipelago. Imagine the tears David Suzuki would shed if a sudden climatic change resulted in them freezing to death... But wait, that happened 10 million years ago when luckily there was not a species around to question its own impact on the global climate.

We still have a lot to learn about the complicated interactions that biologic, physical, and climatological systems the Earth has acquired and tested via meteor impacts, volcanic super eruptions and other unknown (possibly interstellar) phenomena over the planets existence. If we were to launch all the nuclear weapons we had during the height of the cold war I would really doubt the sentient Cockroach ancestors would even notice any change in the *planets* climate (I really doubt the would luck out and still call it Earth :P). Even if we have another 1000 years to study the climate on Earth at least by then our ancestors would be intelligent enough to say that we do not know dick all about it.

Think about it this way... If we can't forecast what the weather would exactly be like in a week what right do we have in saying what the climate will be in 100 years.