The United Nations has begun to establish the strategies responding to climate change at a global level as a guideline for climate change policies to be launched by each country. This is because climate change is placed at the top among environmental problems in that its impact on nature and society is most serious at a global level. The purpose of the United Nations’ strategy is to restore the current status of climate change to the climate neutrality which is the original status of climate before the industrialization having been advanced in the 18th century. In this context, this paper aims at introducing the key contents of the United Nations’ strategies and at examining critically them. This paper will be composed of five parts as below.
Part 1: There are hot debates on climate change in academia. The examples include that what climate change is, climate change is a real reality or uncertain, and what causes of climate change are, etc. Part 1 will introduce some debates on climate change.
Part 2: The current status, future prospect and impact of climate change will be introduced because these are the factors determining the direction and content of climate change response strategies.
Part 3: As a main content of this paper, the United Nations’ strategy responding to climate change will be introduced. This will be presented in three stages. They are Kyoto Protocol Period (1998 - 2012), Post Kyoto Protocol (2013 - 2014), and Paris Agreement (2015 - present)
Part 4: The major strategy having been and being promoted at each stage will be critically reviewed. The critical review will be done on the basis of the concept and implications of low carbon, carbon neutrality, and carbon-zero, all of which are the means to restore the current status of climate change to climate neutrality.
Part 5: Most strategies require a lot of conditions in their process being launched such as finance and advanced technologies, etc. In this context, this paper will examine what capacities should be built as the pre-requisites for implementing successfully the climate change strategy