In mid-November 2022 the eight billionth person will be born, according to the United Nations. In its analysis of this milestone, the UN makes two key observations. The first is that the global population has been expanding at its slowest rate since 1950. The growth rate dropped below 1% in 2020, a trend that is likely to continue. The second is that the growth in population has been due to the gradual increase in human lifespan owing to improvements in public health, nutrition, personal hygiene and medicine. It’s also the result of high and persistent levels of fertility in some countries. According to the UN, just eight countries are expected to be behind 50% of the population growth over the next 30 years. Five are in Africa: the Democratic Republic of Congo, Egypt, Ethiopia, Nigeria and Tanzania. Demographers Akanni Akinyemi, Jacques Emina and Esther Dungumaro unpack these dynamics.
