| Summary: | One attractive subject of climate change is that what effects have been caused by its warming on areas and regions around the world.By analyzing observational data and a large number of past related researches,we analyze several key issues of the view that the global warming may have adverse consequences on humans and other species,including the defects of climate models,the uncertainty of glaciers,sea ice and sea level changes,the uncertainty of precipitation and water resource changes,the possibility of increasing extreme weather events and biological adaptation.It is argued that we should not simply attribute all climatic disasters to the global warming,and more comprehensive scientific assessments and researches are needed to achieve sustainable development.
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