Japanese firms posted a 250% rise in green house gas emission credits during the period January-June 2006, securing rights worth 3.69 million metric tons carbon dioxide equivalent green house gas emission credits. This is equivalent to one years emission of CO2 by 0.65 million Japanese households. Japanese firms have been actively involved in projects abroad that reduce heat-trapping gas emissions in their efforts at securing the greenhouse emission rights with special trading mechanisms under the Kyoto Protocol on global warming.
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