Does Humans Have Caused The Global Warming Effect ?

There is a severe lack of evidence to draw the conclusion that humans have caused the global warming effect. On the contrary, there is strong evidence to support that man is not responsible for this phenomenon.

Ice core records over the past 650,000 years show that CO2 has succeeded temperature change. If CO2 causes global warming, how does this work?

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Anonymous
24.5.09 delete

Well I don't really know much on this subject, but I would just have to assume that if CO2 is the problem to global warming and with the knowledge that eventually the Earth will heat up and cool down on its own, we humans are just speeding up the process. When we cut down trees, or kill of animals, for example the shark, who feed on smaller fish, who in turn feed on smaller fish, who in turn feed on plants under water, thus turning the ocean into a place filled more and more with CO2, thus speeding up the process of things like Earth cooling down, or heating up. So we may just be speeding up the process.

(If something seems incorrect, please do call me out on it, just do it in a polite manner, I wrote this based on assumptions of what I know about things, never really did any research on this subject.)

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Anonymous
24.5.09 delete

CO2 isn't the only thing that causes global warming. NO2, H2O, CH4, CFCs and much more cause global warming as they are all greenhouse gases.


It's important to know that there is a "Greenhouse effect" and an "Enhanced Greenhouse effect". I believe that we've contributed somewhat to global warming, but I don't believe that it's solely us. It's more or less a combination of natural and man-made together.

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Anonymous
24.5.09 delete

The earth heats and cools on its own (ice ages for instance). There is no direct evidence linking human pollution to the warming.

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Anonymous
24.5.09 delete

It's obvious that the earth is getting warmer, and that humans likely play a role in it. What is not known is if we have accelerated it much beyond the realm of it's normal fluctuations.

Also, there are a handful of gases which trap more heat in than CO2 does, but those haven't been studied nearly enough to determine if they have a great affect on global temperature or not.

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Anonymous
30.5.09 delete

The temperature of the planet has been changing for billions of years and its only recently that humans have been able to generate enough greenhouse gases to actually make an impact. If it is us that have either caused a temperature change, or made a change occur more quickly than it should of, we are already to late to reverse it.

I guess its possible for us to limit the damage, but i don't really see that happening with the current rate of growth from LEDC's.

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Alia
30.5.09 delete

To think of this subject, I don't think that we can stop global warming. Much like the extinction of species which many try to protect, it is quite a natural process to undergo extinction - they simply can no longer survive in the environment and hence should die out. We're also trying to prevent or slow down to a natural process. Whether or not this is man made or not, I'm happy that there is a push for what they label "greener" fuels and energy. I think that we all will go through an Ice Age someday and it is whether or not we can survive that matters.

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vipin
30.5.09 delete

The interesting thing is not only our are poles melting, so are the ones on mars. (Now a little note, mars does not have ice like we have here on earth. It is actually dry ice)

Simultaneous warming on Earth and Mars suggests that our planet's recent climate changes have a natural—and not a human-induced—cause, according to one scientist's controversial theory. Now we all know that Earth is currently experiencing rapid warming, which the vast majority of climate scientists says is due to humans pumping huge amounts of greenhouse gases into the atmosphere. But here is the strange thing, Mars appears to be enjoying more mild and balmy temperatures aswell. If humans were the culprit here, how do you explain the same thing there?

In 2005 data from NASA's Mars Global Surveyor and Odyssey missions revealed that the carbon dioxide "ice caps" near Mars's south pole had been diminishing for three summers in a row. Habibullo Abdussamatov, head of space research at St. Petersburg's Pulkovo Astronomical Observatory in Russia, says the Mars data is evidence that the current global warming on Earth is being caused by changes in the sun.

Mars and Earth, for instance, have experienced periodic ice ages throughout their histories.

Now no one can deny "Man-made" greenhouse warming has made contribution to the warming seen on Earth in recent years.

Perhaps the biggest stumbling block in Abdussamatov's theory is his dismissal of the greenhouse effect, in which atmospheric gases such as carbon dioxide help keep heat trapped near the planet's surface. He claims that carbon dioxide has only a small influence on Earth's climate and virtually no influence on Mars.

However his views are not widely supported among the scientific community. Another controversial theory in called Planets' Wobbles.

The conventional theory is that climate changes on Mars can be explained primarily by small alterations in the planet's orbit and tilt, not by changes in the sun. "Wobbles in the orbit of Mars are the main cause of its climate change in the current era," said Oxford's Wilson.

However, Mars and Earth wobble in different ways, due to the fact mars does not have a moon, and therefore wobbles larger. Most scientists think it is pure coincidence that both planets are between ice ages right now. However most scientist would agree that 'we" have cased this, and now fear that the massive amount of carbon dioxide humans are pumping into the air will lead to a catastrophic rise in Earth's temperatures, dramatically raising sea levels as glaciers melt and leading to extreme weather worldwide.

But Abdussamatov remains contrarian, suggesting that the sun holds something quite different in store.

He says "The solar irradiance began to drop in the 1990s, and a minimum will be reached by approximately 2040. It will cause a steep cooling of the climate on Earth in 15 to 20 years."

Although there are two different sides to this, whether man made or not. The danger is still there, and we can't really risk gambling on it not being man made. Besides, all this talk about cleaner technology will be a good idea either way. Going 'green' benefits us no matter what. Developing better and cleaner technology is not only in our planets best interest. It's also in ours as well. After all, more than half of the residents of 10 U.S. states are living in areas with dangerous levels of smog. And according to a study by two independent organizations. Smog, or ground-level ozone, creates serious health risks for children and seniors, and causes or aggravates many respiratory illnesses. Preventing this would lead to longer and healthier life's.

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