Carbon Footprint Calculations

Q.
How can I find out about carbon footprints as the sites I have been on to don't give me the infomation that i need. the question is how does a carbon footprint work and what are the effects of globel warming (green house affect)
A.
“A carbon footprint is a measure of the impact human activities have on the environment in terms of the amount of green house gases produced, measured in units of carbon dioxide.” That is the definition given by the online encyclopedia Wikipedia.

Your carbon footprint depends on your location and your lifestyle. Every appliance and product you use adds carbon dioxide and other greenhouse gases to the air. There are several online carbon footprint calculators. Here are some:

http://www.safeclimate.net/calculator/

http://www.climatecrisis.net/takeaction/carboncalculator/

http://www.bp.com/extendedsectiongenericarticle.do?categoryId=9015627&contentId=7029058

The higher your carbon footprint, the more your contribute toward global warming. The link below explains how the carbon footprint calculations are done:

http://www.carboncalculator.co.uk/explanation.php