Yep --- the temperature of the earth has clearly gone up by 1C over the last century and man likely caused a part of that increase.
Obviously - adding large amounts of greenhouse gases into the air will lead to higher temperatures. However, the amount of CO2 etc. released into the air by factories is not so great as to greatly over-power the absorption rate of plants.
Next --- we are also just exiting a "little ice age" in which global temperatures were 2-3 deg C below the predicted global average. Temperature fluxuations upto 5 deg C are common throughout the history of the earth. If the temperature were to go up even another 3 degrees, we would not expect many extictions.
So --- as is, global warming is one of our smallest problems. Environmental issues are very important --- however, the main current problem is habitat destruction and toxic chemical pollution. It doesn't do any good to worry about a few degrees when over half the world's forests are gone... does it?
2006-12-05 19:07:04
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answer #1
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answered by evaniax 3
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Global warming as a stand alone theory was first modeled by Southampton University back in 1980. Whilst lots of the warming the model suggested worked there were too many areas that were cooling.
Most scientists now use the term "Climate Change" as this far more accurately covers what is going on.
The same amount of rain is falling but just in different places causing floods in one area and droughts in another.
The thermohaline ocean current has slowed and changed, The Southern Hemisphere westerly winds have moved southward in the last 30 years
Much of the continental United States has actually grown slightly colder. The trend toward cooler temperatures in the central and eastern United States is due to warmer ocean temperatures.
The main cause of the melting of ice sheets has been a strengthening in warm westerly winds blowing on to the peninsula. This melts surface ice which seeps through cracks thereby forming blocks. There is natural water under the ice which acts as a lubricant when the block is released to allow it to slide away.
But whilst one area warms another cools and this has been shown to have happened many times in Earths history.
Whilst "Global Warming" is a term that can be used within climate change it is entirely misleading and counterproductive to try and use it as a stand alone term.
It is a rallying cry for ecowarriors with closed minds bent on proving man is destroying the planet whilst they refuse to debate the truth. No wonder the United States politicians refuse to believe it! And the US remains the highest polluter with 5% of the world population contributing 25% of the pollution! It is probably poetic justice that the US has suffered the most from weather changes.
We really would be better off if we could dump the term completely and refer instead to the warming effects associated with Climate Change.
2006-12-06 06:39:37
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answer #2
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answered by Anonymous
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Yes the Earth is getting warmer. But if you look at a broad spectrum of time, The Earth is getting colder. Don't believe me? The Earth was a lot warmer during the different eras in history. We ar in one of the coldest. It is natural for the Earth to go through cycles of extreme heat and cold, hence why we have had several ice ages. If early nomads were to worry about global warming, they would be right. No more mammoths. But hey, we found other foods.
Many people are worried about the environment, but have no facts to back up any of their claims. We are in no danger of becoming extinct or causing other animals to become extinct. If some do, well, that's life. It has been happening for years.
In short, yes, the earth is warming up. But 2 degrees over the next 400 years is not going to kill us. People need to get their facts straight and CITE SOURCES!!! Make sure you use several different sources instead of one narrow view.
2006-12-10 00:07:57
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answer #3
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answered by Anonymous
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TRUE. The Earth has been warming up since the end of the Pleistocene, some 11,000 years ago. Why is a good question and science doesn't have a good answer as to the onset of glaciation, which is a rare event in geology, or its termination.
2006-12-06 12:50:52
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answer #4
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answered by Amphibolite 7
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True.
But caused by man? No definite yes or no...just hysteria and over hyped b.s.
We deserve better.
The pro-global warming caused by man fanatics will have at it and thumbs down me. What will I do? :(
2006-12-06 03:08:34
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answer #5
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answered by Edward 5
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its gonna melt tot world, money means too much to people, but money has no value when there isnt any place to spend it! lol, i think this world is heavly overpopulated
2006-12-06 03:04:53
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answer #6
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answered by Bob7k 3
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true ......why.......people and pollution
2006-12-06 03:02:53
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answer #7
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answered by AnSwERinho 3
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