Re: OT of an OT: Ethanol
I have a question for those of you who might know. What's the big deal about greenhouse gases and global warming?
What I mean to say is, is there any conclusive evidence linking the increase in atmospheric greenhouse gases and a rising average world temperature? Or is it the political maneuvering of environmentalists, or just spouted off by people who have taken one too many looks at Venus?
Do we really know that this is not a part of a natural cycle that the Earth goes through? After all, we don't exactly have detailed records beyond a few decades ago, and a few decades on a geological timescale isn't exactly an amount of time that would allow detailed conclusions to be drawn. And yet it appears that everyone is freaking out about "global warming". Or could it just be the media making a big deal out of nothing?
There have been times in the Earth's not-to-distant history when the Earth was a lot warmer globally than it is now. Something like 4-8 degrees C warmer at the poles. Life didn't become extinct after that happened! That suggests to me that this whole 'global warming' thing is a natural cycle.
What do you guys think?
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