Climate scientists advocate choosing an average global temperature increase above which society agrees not to go and reducing greenhouse gases emissions to keep global temperature from exceeding that value. To avoid dangerous climate change, emissions reductions need to be greater than those required by the Kyoto Protocol and will require the participation of all the nations of the world. In the absence of adequate government actions, some individuals, communities, and regions are beginning to take responsibility for their own greenhouse gas reduc tions. Although these measures are extremely valuable, without the coordinated effort of all the developed nations and the major developing ones, keeping global temperatures to tolerable levels is unlikely. Getting all nations on board with emissions reductions is the only way to achieve the greenhouse gas emissions reductions necessary to signifi cantly impact rising temperatures.

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