Almost a third have no access to clean water. A quarter do not have adequate housing. A fifth have no access to modern health services. A fifth of children do not attend school to grade 5. About a fifth do not have enough dietary energy and protein.
Micronutrient deficiencies are even more widespread.
In developing countries only a privileged minority has motorized transport, telecommunications and modern energy. Inequalities in consumption are stark. Runaway growth in consumption in the past 50 years is putting strains on the environment never before seen. The burning of fossil fuels has almost quintupled since 1950. The consumption of fresh water has almost doubled since 1960.