Report, edit, etc...Posted by Desperado on 2006-12-04 at 01:14:41
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I guess I'd be convinced global warming wasn't a result of human activity if there were some other explanation. But as far as I know, there isn't.
A predictable temperature cycle lasting hundreds of years that has existed since the formation of the planet?
Report, edit, etc...Posted by Chef on 2006-12-04 at 07:28:16
=/ Hundreds? You mean MILLIONS? I don't think it's predictable either, but I'm pretty sure those had to do with the distance between the Earth and the Sun... The planet does not just randomly heat up. Don't we have explanations for these cycles? The existance of the cycles isn't enough proof for me =P
Report, edit, etc...Posted by Lithium on 2006-12-04 at 12:46:27
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the distance between the Earth and the Sun...
Earth's sun round-trip is elliptical. it happens that its closer to the sun when its winter. It has to do with geothermal and atmospheric changes.
Report, edit, etc...Posted by CheeZe on 2006-12-04 at 17:00:46
Um.. earth's orbit might not be perfect circle but it's not because of the orbit that causes the seasons.. it's the tilted axis.
Report, edit, etc...Posted by Hofodomo on 2006-12-04 at 17:47:35
Well, they both have to work together. Make the orbit a circle, and I guarentee you the seasons won't be quite the same...
And BTW Lithium, don't you mean the Earth is close to the sun when it's summer, or did I read that wrong?
And BTW Lithium, don't you mean the Earth is close to the sun when it's summer, or did I read that wrong?
Report, edit, etc...Posted by Chef on 2006-12-04 at 20:14:51
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atmospheric changes.
Which I believe humanity happens to play a huge part in =P
Report, edit, etc...Posted by Doodan on 2006-12-05 at 06:34:23
QUOTE(Hofodomo @ Dec 4 2006, 05:47 PM)
And BTW Lithium, don't you mean the Earth is close to the sun when it's summer, or did I read that wrong?
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Earth is farther away from the sun during the northern hemisphere summer. As CheeZe said, its the earth's tilt that causes the seasons. During the northern hemisphere winter, the earth is a tad closer to the sun on its eliptical orbit. But the proximity ranges only a million or two miles, and that isn't enough to make a very noticable difference.
Report, edit, etc...Posted by Lithium on 2006-12-05 at 07:17:15
No Hofodomo. You read me pretty clearly. The global warming doesn't have to do with humanity. But I can say OZone being destroyed and radiation entering our planet has to do with humanity.
Report, edit, etc...Posted by Hofodomo on 2006-12-06 at 15:27:34
how did "humanity" come from "orbit"? 
anyhow...it's all relative...
anyhow...it's all relative...
Report, edit, etc...Posted by Cole on 2006-12-08 at 17:54:34
According to my science teacher. Yeah global warming is happening...but for the most part it's natural. We haven't even deneted how much pollution all the volcanoes have put up into the atmosphere. Fractions of a percent. Actually he siad compared to one big volcano so I am defiently taking what he said and pushing it to make it seem more resonable to everyone.
So yeah where speeding it up but not by much. Not by much at all. It would happen even if we wern't here.
So yeah where speeding it up but not by much. Not by much at all. It would happen even if we wern't here.
Report, edit, etc...Posted by green_meklar on 2006-12-08 at 20:03:25
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According to my science teacher. Yeah global warming is happening...but for the most part it's natural.
It's hard to tell exactly how much is natural. However, it appears that humans are at least having a significant effect on it. Remember, this isn't limited to cars and coal power plants; there are a wide range of other things we do that produce greenhouse gases, including hydroelectric dams (believe it or not they actually pollute almost as much for the electricity they make as fossil fuel plants) and, even more importantly, rice farms. In fact, the statistics show that our effect on global warming probably started not in the past 200 years but all of 8000 years ago, by the earliest asian farmers producing methane in their flooded rice paddies.
Some of it may be natural, but there's not really any room to argue that we're not having a significant effect.