Possible impacts
When you have completed this chapter you should know impacts of climate change so far, and what is likely to happen the next decades. You should know that even though there are some positive effects of global warming, it is likely that the balance will be negative, maybe very negative in the long run. You should be able to point out and explain some positive and some negative impacts that climate change is likely to have on the ecosphere and on human societies, and that the UN aim is to stabilise GHG emissions at a level where the negative impacts are minimal, vulnerability is reduced and where mitigation and adaptation is possible.