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I posted this because I was wondering just how much I'm in the minority here.
It appears considerably so. I personally believe (and scientific data confirms this) that the earth has been in a long-term warming period since long before the industrial revolution, since the last ice age, with the exception of a few interruptions. So I think those of us who believe that the trend would stop if we stopped using greenhouse gas-emitting products are mistaken. Doing so might slow it down, but I think the warming would continue, but there does seem to have been many intermittent periods of glaciation and warming on the earth, and that cycle will probably continue, and as scary as the displacements due to warming may be, the idea of a new glacial period is much more frightening to me.
Also, although I think some sea level rise is likely (we've seen about 10 cm of sea level rise in the last century), I think predictions of 20m rises in sea levels within our lifetimes are premature and rash. Climate models are great but they are not infallible, and I personally would be surprised to see even a meter's worth of sea level rise in my lifetime (and a meter would be a significant rise - enough to cause major displacements and problems in coastal areas.
I'm often hesitant to talk about this because there seems to be an almost religious quality in the firmness of the belief people have in the worst-case scenario coming true - and soon. It's like it's an article of faith - and in science, faith is not a good thing.
And I don't want to be labeled a climate change skeptic or denier, because I'm not. I've been riding my bike and driving econoboxes all my adult life, not because of "warming", but because I hate smog, and I don't believe in wastefulness.
I disagree with those who say that nothing of significance is happening, or that the whole warming thing is just a "scare" intended to cripple capitalism. I'm certainly not enamored of capitalism in the least.
And I'm in favor of everyone doing all they can to reduce consumption of fossil fuels - in fact I never thought the big SUVs should have been road-legal. Passenger cars should be getting an AVERAGE of 35 mpg by this point and all freeways should be toll roads at this point to encourage the use of mass transit.
But I'm sorry, I don't see 20m of sea level rise this century. I'll need to see much more significant sea level rise in the short term to buy that. 1cm per decade is not convincing. Even the whole "superstorms" thing is a little dubious. Yes, there have been more tornadoes in the last few years. But there have been huge crops of spring tornadoes in the spring and summer as long as I can remember, and I'm pushing 40. Now there is more and more sprawl over the south and midwest, so there is that much more of a chance they will hit homes (and don't get me started on today's flimsy home construction).
I don't think the worst-case scenario is impossible, nor to I think it's a given, but the continuing growth of earth's population and our growing inability to feel it is a given, which is why I included that as a choice. The lack of food and drinkable water in coming years is going to be more and more acute as demand for food soars and production stagnates. I think by taking much stronger action to combat population growth, we'd be doing much more to save humanity than by fretting about climate change (which we may be powerless to stop anyway). In fact, if we could get the earth's population back down to 4 or 5 billion within the next century or so, we might actually be able to get an equilibrium that the earth could support and reduce greenhouse gases in the process.
Lastly, there are large corporations and government entities which are supporting the worst-case Climate Change scenarios now - when that happens, you know there are people planning to make large amounts of money from it, one way or another. My guess is that the big money will be in alternative power sources (good) and nuclear (scary as hell). The more the climate change disaster scenarios become a matter of faith in the public, expect less and less resistance to the construction of new nuke plants.
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