Against this backdrop, can the broadly agreed lessons discussed above provide the ingredients for a consensus regarding the features that are desirable in country-specific national development and poverty reduction strategies? Before considering this question, however, it is necessary to examine the new challenges that have emerged in the interim. Among these are population ageing, migration and climate change which will compound the poverty challenge, while also providing new opportunities. It is the result of progress in human development, which has meant a lowering of child mortality and improvements in health conditions, resulting in a rise in life expectancy.