However, since it is primarily the developed countries that are the main cause of the high levels of greenhouse gases (GHG) in the atmosphere due to their industrial activities spanning more than the past 150 years, the Protocol places higher emissions reduction targets on them under the principle of "common but differentiated responsibilities" . Today there are 195 parties to the UNFCCC and 192 parties to the Kyoto Protocol. According to the Organisation for Economic Co-operation and Development , the key features of the Kyoto Protocol can be summarized under 5 points:
1. As was already mentioned, industrialized countries were committed to reduce their greenhouse gas emissions through legally binding targets for the 2008-2012 period. The GHG include six main categories of gases: Carbon dioxide (CO2), Methane (CH4), Nitrous oxide (N2O), Hydrofluorocarbons (HFCs); Perfluorocarbons (PFCs); and Sulphur hexafluoride (SF6).
2. The Protocol’s goal was to achieve at least a 5% emissions reduction in industrialized countries for the 2008-2012 timeframe compared to