Global warming is the increase of world's average temperature, mainly in the sector of atmosphere, seas and the land on Earth. here are three serious factor, namely the crack on the lower part of atmosphere, pollution on Earth an so many green houses. The first factor is on the atmosphere. Recent years, many researches show that atmosphere has some kind of crack because of the heat from sun's emission. The layer of atmosphere seems can not take the heat anymore. The crack gets larger as the sun-ray holds in the atmosphere as there are gases as what it seems to be the cause. This second factor, pollution, takes its toll as the one which makes the sun-ray stuck n the atmosphere. These gases are very thick that even the sun-ray can not get through it, or at least it is hard to do it. The third factor is that the green houses, reflected the sun-ray that supposed to be stayed on Earth sending the sun-ray back to space, but remember though, there is the gases that block the process of sending away the sun-ray. If the green houses don't stop being built, that will just be a helpful tool to make the atmosphere and our Earth worst. From these explanations, details and examples, my conclusion is that someone has got to do something and not just keep inventing new technology or fancy factories because what we need now is not something that can make life easier but something that can decrease the temperature.