The two main causes of global warming are:

Burning of fossil fuels (coal, oil and natural gas) which releases carbon dioxide.

Deforestation, which removes the trees that take carbon dioxide from the atmosphere.

Fossil fuel (coal, oil and natural gas) contains carbon that has been kept out of the earth's carbon cycle for millions of years. The earth has a natural greenhouse effect which has kept the temperature comfortable for man during that time.

We are now (since the Industrial Revolution 200 years ago) burning more and more fossil fuel (in industry, transport and to generate electricity). This extra carbon dioxide (CO2) is adding to the CO2 normally in the atmosphere and causing an enhanced, or accelerated greenhouse effect.

The greenhouse effect happens because greenhouse gases (any gas with at least 3 atoms) stop some of the sun's infrared radiation escaping out to space. The gases use the captured energy to produce heat. More and more of the greenhouse gases means more and more heat, all over the planet. Global warming of the planet.

Some CO2, in the atmosphere from the burning of fossil fuels is published.

Carbon dioxide in the hot sun can help.

Carbon dioxide back to the area to help keep the heat and radiate heat, because it is normal for people to try.

The heat has to go somewhere, and warms up a bit more space and in the warm sea.

We are, in fact, are the results, such as the weather in the "global warming" does not cost time.

Warming oceans and seas in their circulatory system and power affects the flow of air and water. They are so accustomed to the normal distribution, in some areas, in other areas because of the changes, some sites stronger hurricanes, awareness of the rain, in some areas, the warm air, cold winter weather, a push to get a normal monsoon rain.

Thus, in some cases, or colder than normal weather, because it would be global warming

Burning fossil fuels releases carbon dioxide gas, some of which accumulates in the atmosphere.

Carbon dioxide gas lets the sun's ray through to heat the earth.

When the earth tries to re-radiate some of that heat, as it would naturally do, the carbon dioxide helps to hold the heat in.

The heat has to go somewhere so it slightly warms the atmosphere and slightly warms areas of the ocean.

We call the effect 'global warming' though, in reality, the effect may appear not to be global because of the way weather patterns work.

The heating of oceans and oceans puts more energy into their circulatory systems, affecting the flows of air and water. As a consequence, some places will experience more and stronger storms, some places will get more rain than they are used to, some places will see colder winters as weather patterns shift the normal distributions of warm air, some places may find their normal seasonal rain get shifted to elsewhere.

So, while some places might experience COLDER weather than usual, the cause can still be global warming.

The simple answer

The first fossil fuel combustion the carbon dioxide emissions (CO 2) in the atmosphere.

Carbon dioxide is, is the green, because they allow the second land pass through the solar-called greenhouse gases, but the heat can not escape into the space reserved.

3 Thermal captures not only due to temperature rises, but because of the atmosphere and climate system increases more intense heat. This is evident by the hurricane and storm, for example, the maximum

http://www.rkm.com.au/ANIMATIONS/carbon-... <== here's the physics.

For both water and CO2. You really want to understand what it's saying.

The more water and CO2 there is in the atmosphere, the more heat the earth retains.

This is the basic science behind global warming.

http://en.wikipedia.org/wiki/Global_warm...

Wikipedia probably has the most complete description in one place.

Now you are going to see lots of folks say it's not true. But what is it that makes their ideas believable?

On the other hand we have honest scientists.

http://en.wikipedia.org/wiki/Global_warm...

"The finding that the climate has warmed in recent decades and that human activities are already contributing adversely to global climate change has been endorsed by every national science academy that has issued a statement on climate change, including the science academies of ALL OF THE MAJOR INDUSTRIALIZED COUNTRIES."

http://en.wikipedia.org/wiki/Scientific_...

"With the release of the revised statement by the American Association of Petroleum Geologists in 2007, no remaining scientific body of national or international standing is known to reject the basic findings of human influence on recent climate change."

IE, NO REPUTABLE SCIENTIFIC ORGANIZATION NOW CLAIMS THAT AGW IS NOT REAL.

SO, virtually all of the scientists, from countries around the entire world, think that global warming is a problem. Why do so many relatively uneducated people, who honestly don't understand the physics involved, think that they are smarter than the scientists, who, in many cases, have Master's, and PhD, degrees? That is the problem that we're having -- the number of people who don't understand, or don't care, that the earth really is warming.

Simple answer

1. When fossil fuels burn they release carbon dioxide (CO2) into the atmosphere.

2. CO2 is a so called green house gas that is it allows sun energy to pass through to the earth but traps the heat which cannot escape into space.

3. The heat that is trapped not only causes temperature to increase but because of increased heat energy in the atmosphere more violent weather systems are formed. These are manifest by larger hurricanes and heavy rainfalls for instance.

Burning fossil fuels releases carbon dioxide gas, some of which accumulates in the atmosphere.

They don't. That is just the propaganda line.

There is NO **man-made** Global Warming and there has never been any.

What global warming? It's been cooling for at least 12 years according to HadCrut3 & HadCrut4 is nearly flat. http://www.woodfortrees.org/plot/hadcrut...

According to RSS Satellite data there has been no warming for more than 18 years.