Do you understand that the greenhouse effect already warms the Earth so much that it would be a frozen iceball if not for this effect, so only a small variation in its total effect would be more than enough to create significant globalwarming? That's why it's stupid and ignorant to say that human CO2 production doesn't matter if it appears to be only a small proportion of the overall greenhouse effect.
CaptHawkeye
I wholeheartedly agree with this. I always use the example of a cup of water, which, left to its own devices, fills itself up and drains itself out naturally. It sometimes approaches the overflow level, but it never exceeds it in its natural setting. However, if you get an outside element adding water, it screws up the natural balance of the cup. It doesn't even need to be much water added... if the cup is already close to full, adding even a little bit can cause it to overflow, making a big mess.
Really, even if humans have NO EFFECT WHATSOEVER on global warming, there are STILL plenty of great reasons to limit the burning of fossil fuels in favor of cleaner, more sustainable energy initiatives. Acid rain and pollution are real problems, especially in large cities. Pollution damages natural habitats and endangers the health of people who must breathe the polluted air. Given an alternative of breathing clean air and using energy alternatives that don't cause pollution, what sensible person would stubbornly cling to fossil fuels? Those with an economic interest, that's who. And frankly, that's why we don't change. Too much money, people claim. Too hard.
I think the video that was posted earlier is a wonderfully clear expression of why it's in our best interests to change our habits. The risk of a global disaster on only the economic level is better than the risk of a total global disaster. And if man made global warming is indeed totally false, changing our habits would still not be wasted money, because we'd be living in cleaner cities, using power sources which are not going to run out, and which do not depend on ripping apart the world in search of fossil fuels.
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