Global warming is sketchy at best. Below is a link taking you to a NASA chart showing the temperature change from 1880 to 2005. Since 1880 the earth's temperature has risen less than 7/10 of 1 degree C. See for yourself here: http://data.giss.nasa.gov/gistemp/2005/2005cal_fig1.gif
There are numerous charts all over the internet showing the same. The fact that people choose to ignore the facts of these charts shows that they have an agenda to convince the masses of something that really is not happening.
In fact here's a link to a secular scientific article that shows the earth was actually warmer in the past than it is today.
http://www.msu.edu/course/isp/203/raeburn_old/fulltext/class9.pdf
And here's an article from a Harvard University study that says: "Such claims have now been sharply contradicted by the most comprehensive study yet of global temperature over the past 1,000 years. A review of more than 240 scientific studies has shown that today's temperatures are neither the warmest over the past millennium, nor are they producing the most extreme weather - in stark contrast to the claims of the environmentalists.
The review, carried out by a team from Harvard University, examined the findings of studies of so-called "temperature proxies" such as tree rings, ice cores and historical accounts which allow scientists to estimate temperatures prevailing at sites around the world.
The findings prove that the world experienced a Medieval Warm Period between the ninth and 14th centuries with global temperatures significantly higher even than today."
The full article is here: http://www.freerepublic.com/focus/f-news/886197/posts
I hope that helps...
2007-01-04 07:05:10
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answer #1
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answered by capnemo 5
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Our geology teacher showed us a Discovery Channel show on this - I think they said it might happen again soon (well, relatively so - within the next few centuries, maybe?) But perhaps they were just being dramatic.
I think some of the scientists said that the hole in the ozone is a result of this - like, it's section where the polarity is confused and starting to turn north, and that's what's killing the ozone. I think, according to this theory, the reversal of the poles isn't an actual movement of the poles gradually snaking down the earth, but a growing confusion of polarity. Supposedly, for a time, before the poles settled again, there effectively wouldn't be any polarity, and it would result in all kinds of crazy weather and interferences and extreme solar radiation!
Well, good luck with your project!
2007-01-03 19:13:05
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answer #2
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answered by Cedar 5
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The reversion of the poles are due to a phenomenon called precession of equinoxes. The poles actually circumscribe a circle with its end on the sky in a period od about 28,000 years.
This bring many climatic changes due to circumstances like when earth gets closest to the Sun, say the southpole faces towards Sun, however its possible at that some other time due to precesion, the northpole could face towards the Sun.
This might cause the ice cap on the poles to melt and flood the world. So its possible that warming could be due to the same phenomenon.
2007-01-03 16:20:58
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answer #3
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answered by apollo 2
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The magnetic poles do move, and reverse from time to time, but the process is irregular and not well understood. There is no reason at present to suppose that this has any relation to temperature changes, beyond some trivial changes due to solar wind particles reaching the ground in temperate latitiudes rather than being directed to the poles by the magnetic field.
2007-01-03 16:19:08
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answer #4
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answered by Anonymous
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Climate is driven by factors intrinsic to the Earth, and extrinsic effects of the sun and other radiation. You have to ask yourself how magnetism can affect any of the mechanisms that affect climate. Magnetism has no direct effect on any intrinsic physical processes that affect climate: ocean temperature, ocean salinity, Coriolis effect, ocean circulation patterns, wind, atmospheric composition, or air temperature.
There is an extremely remote chance that the position of the magnetic poles could affect solar output, but it's more likely that sunspot activity affects the magnetism on Earth. Its plausible that increased solar activity has caused simultaneous shifts in climate and magnetic poles. But, rapid shifts in the magnetic poles correlate with some climatic shifts, but not all, so shifts in the poles, alone, cannot explain past climatic shifts.
Here's a bunch of online sources of info at this link:
2007-01-04 07:54:55
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answer #5
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answered by formerly_bob 7
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The reversing of the poles is known to have happened in the past and it is very likely to happen again, but I don't think it has anything to do with global warming. Nevertheless, this may cause some atmospheric changes when it will happen.
2007-01-03 23:33:50
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answer #6
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answered by Ioana M 2
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