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How To Calculate Your Carbon Footprint

Green Business Bureau

But there are other GHGs that contribute significantly to human-induced global warming such as methane (CH 4 ), nitrous oxide (N 2 0), refrigerant gasses (HFCs, PFCs, and CFCs), sulfur hexafluoride (SF 6 ), water vapor (H 2 0), and ozone (O 3 ). What’s the relevance of these different GHGs to carbon footprinting? .

Carbon 78
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Climate Change: Where Are We Now?

Unsustainable

Eighteen of the 19 warmest years all have occurred since 2001, with the exception of 1998. The IPCC was an outgrowth of a 1987 Canadian conference which produced the Montreal Protocol , an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion.