Carbon is one of the most important gas for our existing as it supposed the phenomena of photosynthesis by forming carbon dioxide.Its composition is less than one percent in the earth's atmosphere.As we increasing needs of human beings carbon dioxide is also increasing and this is basically, producing a lot of heat and result in increasing temperature of earth's atmosphere.Carbon dioxide gets trapped in the layer of atmosphere and contributes in green house effect and results in Global warming.therefore,the main contribution to green house effect is of carbon dioxide.Moreover,carbon when not completely burned produces carbon monoxide which is a poisonous gas.

Carbon capture and sequestration will help offset global warming in a very large way. When carbon dioxide is released into the atmosphere it traps the suns heat on earth. If the carbon dioxide was instead captured and trapped underground it would not trap the heat on earth. The heat would instead be allowed to dissipate. The less heat would help offset the rise in global temperatures.

With carbon capture (sequestration), the carbon pollution from factories, mills, and manufacturing buildings is captured at the source and is prevented from releasing into the atmosphere. The carbon pollution is then stored in other means and sometimes used in carbon deficient areas. This will offset global warming by preventing harmful pollutants form entering the atmosphere. It is sometimes considered to be more harmful than good as some companies use more fossil fuels to capture the carbon pollution.

When oil or coal is extracted from the earth and burned to produce energy the carbon emissions are released into the environment. If you think of this carbon from fossil fuels as being like air locked up in a bottle, as long as the bottle remains sealed the carbon has no where else to go. But once the bottle is opened the carbon is released. In the end, this represents a transfer from storage into the atmosphere.

The current release of carbon is exceeding the Earth's capacity for absorption resulting in a build-up of carbon and other heat trapping gases in the atmosphere. By capturing the carbon and sequestering it in underground caverns, the basic idea is to significantly reduce the build-up of carbon pollutants in the atmosphere thereby mitigating climate change.

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As a contractor for renewable energy systems, this information reflects my daily intake of information so I am not able to specify exactly where it came from.