Get reliable science

Now that governments are beginning to consider actions to respond to the potential threat of global warming (even if they do not yet believe that it will definitely occur), their representatives search the scientific literature for [`]clues' about the positive or negative impacts of a few degrees Celsius increase in global temperature. There is a growing number of [`]guesstimates' (often called scenarios) about climate change impacts in sub-Saharan Africa. A review of the existing scenarios highlights conflicting, if not opposing, views about those impacts. Such scenarios must be used with caution and labelled as speculation. No single scenario should be used for determining irreversible policy responses to the potential regional consequences of global warming.