An utterly, completely bullshit theory, revolving around CO2, chloroflourocarbons, and other, man-generated pollutants causing the O3 layer to decay, and insulate the atmosphere.

Of course, one large volcanic eruption, such as that at Mount Saint Helens, or another, would spew more ash and pollutants - which, according to this theory would cause the earth to become hotter - in reality, releases more pollutants, than humans do at their current rate in 50 - 100 years. Such events generally occur roughly every 10 years, globally.

On to point two, the earth's climate has been changing constantly since its creation. There've been numerous ice ages, and hot periods in the past, all of which were caused by nature, not people. Of course, one may argue that this "climatic change" is accelerated, but how is one to know that?

Simply put, there are far too many variables which result in a global alteration of the climate of earth, with one of the smallest being pollutants. Isolating and neutralizing most pollution will definitely help large, urban centers, such as Los Angeles, New York, Seattle, for instance, which do have smog problems, but will not affect the entire earth.

An increase in the average temperature of the earth's atmosphere, especially a sustained increase sufficient to cause climatic change.

When you know the heat its not mother nature

Noun. The heating of the Earth's temperature as a result of abundant greenhouse gases from mankind. Although global warming is the consensus of the world's scientists, just like plate tectonics, evolution, or gravity, there are skeptics who tend to think other wise. Even if you don't think it exists, it is still no reason not to live a sustainable (or "green", whatever) lifestyle. That's what we call a win-win situation. However, the people that don't think it exists are basically looking for a reason to justify their fear of getting rid of their material possessions they hold so dearly; be it a car, hamburger (large carbon footprint), air conditioner, etc.

Increase in average temperature of Earth since the mid twentieth century and it's continuation. Temperatures have been rising for a few decades now and if idiots continue to pretend it doesn't exist then they'll cause all of humanity to learn the hard way.

The reason Global Warming is an undesirable thing is primarily because it is melting the polar ice caps and raising sea levels. Contrary to popular belief, HUMANS CANNOT BREATHE UNDER WATER, hence we cannot let temperatures rise enough to melt such an amount of ice that'll end up flooding most of the land that we live on and force us to cram in to even less space than what we live in now. Combine that with exploding population rates (Set to triple from 1950-2050, oh joy.) and you have a recipe for disaster.

Of course, anything that's this logical is obviously denied by people. For example, in the US the majority of the Republican party deny it's existence; not because they actually believe in it not existing, but because its generally a rule of thumb for them to disagree with anything their opposition says.

Another funny example could include Britain, where the government raised car tax to encourage people to cycle, carpool, take the bus, etc. This was done to reduce emissions, primarily because 40% of all car rides were less than two miles long. But, as usual,...

You know, if the scientists and climatologists, who are educated in the feild of global warming are saying that the world is getting hotter, then why debate with them. Bush doesn't give a damn about global warming because he sucks up to the oil companies. Its not just a theory its a proven fact. It used to snow where I live now it doesn't snow anymore.

The Earth as an ecosystem is changing, attributable in great part to
the effects of globalization and man. More carbon dioxide is now in
the atmosphere than has been in the past 650,000 years. This carbon
stays in the atmosphere, acts like a warm blanket, and holds in the
heat - hence the name 'global warming.'

The reason we exist on this planet is because the earth naturally
traps just enough heat in the atmosphere to keep the temperature
within a very narrow range - this creates the conditions that give us
breathable air, clean water, and the weather we depend on to survive.
Human beings have begun to tip that balance. We've overloaded the
atmosphere with heat-trapping gasses from our cars and factories and
power plants. If we don't start fixing the problem now, we're in for
devastating changes to our environment. We will experience extreme
temperatures, rises in sea levels, and storms of unimaginable
destructive fury. Recently, alarming events that are consistent with
scientific predictions about the effects of climate change have
become more and more commonplace.

(from stopglobalwarming.org)

Global warming was not created by Democrats to scare people. It is a proven fact. I'm Republican and I believe that global warming has become a problem. Currently (January 2007), it's 70ºF in my town. Normally, it's about 20ºF around this time of year. It's a probem whether you want to admit it or not. When England becomes flooded, Venic...

when fossil fuels are burned from cars and other gas using vehicles. Since carbon dioxide is a greenhouse gas it causes heat by it sucks infrared radiation that causes heat and makes it so it is hard for the sun rays to escape.