Only humans are causing global warming?

No it's the sun.

If you want to blame a creature for it through CO2, blame termites and microbes. They make far more CO2 than we do.

Here is some information from the US National Academy of Sciences. Global warming is caused by multiple factors. The main natural drivers are orbital cycles, solar cycles and volcanic activity. These factors explain warming and cooling up to the industrial revolution. After that, we see a rapid increase in temperature change in a very short time. This is correlated with a rapid increase in human emissions of green house gases. Scientists have found that the current acceleration in warming is only explained when they consider human influence in their equations. The warming beyond the natural rate of warming is caused by people.

http://dels.nas.edu/dels/rpt_briefs/climate_change...

Look at figure 4 on page 6. The computer models indicate that if only natural factors are driving the climate (blue line), we should not have had much of a change in temperature since 1900 (temperature anomaly ~ 0, maybe 0.1 C increase at most). But when human emission are figured in with the natural factors (red line), the model predict a more than 5 C increase in temperature by the year 2000. We have seen a 0.7 increase from around the 1900s to 2007.

Although 0.7 C seems like a very small increase, that is an average number so it in essence hides a lot of big and little numbers. It is like your scores in school. You can get low grades on homework, high grades on class work, extremely high grades on test, but you average for a grading period will be in the middle. Your grade on your report card doesn't show the 100s on your class work, or the 0s on the homework you didn't do. The 0.7 doesn't show the very high temperature changes at the poles, or the small changes at the equator for example. The local temperature changes can be much greater than 0.7C, and that can adversely affect climate and ecology.

Read the PDF to understand better.

The increase in CO2 over the past forty years has averaged about 12 billion metric tons, which is comparable to the estimated production of the stuff by human activity. But this is not conclusive; there is evidence that CO2 increases have followed, rather than preceded, episodes of warming over the past several hundred million years, and if that is the case, human activity cannot be held responsible. CO2 levels depend on the interaction between the atmosphere and the ocean, which contains fifty times as much CO2 as the air does.

Al Gore Should Shut His Trap! Everytime it opens a bunch of hot air comes out

Ok... many people are wrong because of how they THINK that humans have an impact on Global Warming. Sometimes, I have uncontrollable anger towards Mr. Al Bore a.k.a I invented the internet. He is the worlds biggest hyprocyte that ever lived. These Are the facts on Global Warming.

THIS IS AN EXTRACT FROM A SPEECH I WROTE .

II. Global Warming is the most debatable topic that was probably ever around. You need to know this information. If you don’t educate yourself properly on this topic you will live the rest of your life in fear of something that doesn’t exist.

A. Global Warming is a natural cycle. Everything about it is natural. Carbon dioxide levels vary throughout time. Humans can make little or no impact on the environment.

1. In reality…. There is about one person who doesn’t believe in Global Warming to two people who do. This means that only 60% of the world believes in global warming. My goal by the end of this response is to have the 60% be persuaded that they do not believe in the accurate thing. With the following facts, I am 100% sure that this goal is possible and will be achieved.

2. Al Gore stated this quote in his movie “…The 10 hottest years ever recorded were within 15 years of today.” Now this point is valid and true, but we have not been measuring the temperature or anything since the early nineteen hundreds. Can we go down and see how the polar ice caps were doing in the early 1800’s? We can not do that because temperature was not recorded. You may say that they guessed using carbon dioxide levels, but whose to say that they are right? I heard that scientific measures were not always accurate because they took a hundred year old log and did some carbon 14 testing on it. Scientists thought that it was thousands of years old. It was later proved to be younger after more tests were ran. Who’s to say that our method of discovering weather is right? We have been measuring temperature for only a short period of time. Earth right now is in a heating process. Thousands of years ago we were cooling which is when we had an Ice Age. Now we are doing the opposite and are starting to warm up before cooling again. Look at this political cartoon. What is one thing that you notice? I notice it being freezing then gradually getting warmer. As my next point is about to prove, we have no effect on the environment no matter what we do.

3. In 1990 a volcano in the Philippines erupted violently. It was by far one of the biggest explosions of the century. We all have read about how volcanoes let off carbon dioxide, but did you know this… When the volcano erupted, it put more carbon dioxide in the air than all of humanity has ever produced…. More than humans have made since the creation of time. All in just a matter of hours. Look at this picture (not included). See all of this carbon dioxide being put into the air? While, with all of this there was no temperature increase or decrease at all… just some carbon dioxide level changes, but nothing major. If volcanoes put off this much carbon dioxide with no effect, then how could we be doing this? When all this happened, then how could you be persuaded that humans who produce fractions of that amount could impact the environment in fractions of the time? Humans if we tried could not severely impact the environment. It is just too big. Even if we are letting some off, plants and other natural recyclers of Carbon Dioxide are just transforming them to oxygen.

4. During World War II, we dropped two nuclear bombs on Japan. We spilled tons of harmful green house gasses into Mother Nature. This includes radiation, carbon dioxide, and carbon monoxide. After all of that happened, again there was no effect to the environment that was found. Hiroshima has been having radiation problems still, but there is no significant temperature problem. Nothing humans do can severely change our environment. We only occupy about 50% of the globe. The other 50% is the ocean, ice caps, and land that are not suitable for humans. How could two nuclear bombs not have an impact on the environment, but changing a light bulb in your house to fluorescent can save the environment? It is just impossible that we could have an impact.

5. Another point is that if you look in your text book, I promise you that you will find these words… “When Washington was marching his troops, it was bitterly cold outside” Bitterly cold means freezing. I know that they didn’t have supplies but Virginia in the summer (which is when they fought) is warm. As you can see by these charts, it was 106 degrees outside in the summer. This is without humidity too. Now when we look at this chart it shows us that the battle was fought in Yorktown. There isn‘t much of a distance between Yorktown and Richmond, were this was recorded. How was it bitterly cold a few hundred years ag

Most global warming is caused by the sun. It is a large atomic bomb constantly going off. Like a fire it heats up and cools down. We on Earth are affected by it.

Now cutting down the rain forest does reduce water vapor into the air. This reduction in water can cause heating and weather pattern changes.

CO2 levels have almost no effect on the heating of the Earth at least not the silly little changes that have occurred and these nut cases are all concerned about.

Yes and no. Humans are emitting most of the greenhouse gases. However, part of global warming comes from cow fart. But on the other hand, we are the ones demanding cows for meat and milk. So that too, indirectly, is our fault. Yes. We are causing global warming.

Supposedly farting cows are going to kill us all, unless those jerky pigs and their swine flu kill us first. And let's not forget the birds and their flu. Revenge of the farm animals, eh?

P.S. Global warming is fake.

mostly, yeah people's intelligent is one big factor on global warming and some animals and forest fire.

yes i agree humans are the only ones causing global warming because of all the factories and oil and pollution.

Know we know there are multiple factors. See the IPCC report. There are natural and human factors, but human emissions of greenhouse gasses is the largest.