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Politics : The Environmentalist Thread
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To: Brumar89 who wrote (16631)10/3/2007 7:43:05 AM
From: Sam  Read Replies (1) of 36921
 
You're confusing thinking in terms of human lifetimes vs geological or astronomical time.

Orbital effects on the weather happens over a veeeerrrrryyyyyy long time. And I don't mean a century or two. GW based on CO2 due to the industrial age is happening quickly. Far too quickly. If it happened gradually over a millenia, it wouldn't be too bad--people and other life would have a chance to adjust. It is also too intense. Look, for several hundred thousand years, we didn't go over 300 ppm of CO2. We just went over 300 ppm in the 20th century. We were at around 320 ppm in 1950 or so. We have gone to 387 ppm as of 2005, I think it was. The slope of the rate of increase has gotten steeper since 1970, and continues to get steeper. We've already baked in an increase over 400 ppm. Best guesses among IPCC scientists is that we will see large scale die offs when we get to over 450 ppm.

Yeah, I know. What do scientists know anyway? They didn't think that the arctic would melt this fast. They're probably wrong about when we'll hit 450 ppm, and even if they're not, they're probably wrong about the effects. It will be good for life to fry in the heat. God wouldn't let that happen, would he? Nah.... I don't know what I'm worried about.

Yeah, right.
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