People walk along a pedestrian street surrounded by small shops in the city of Changsha, in the Chinese province of Hunan. China accounts for 19 per cent of the world's total population. AFP
People walk in the streets of Sajeri village in Nigeria. Nigeria is one of eight countries that will account for more than half of the increase in global population up to 2050. AFP
India, with its current population of 1.3 billion, will surpass China, the world’s most populous nation with 1.44 billion people, by 2023. AP
Al Atba district in Cairo. Egypt's population has reached 100 million, highlighting the threat of overpopulation. AFP
Ethiopian refugee women wait to receive non-food items distributed by the Kenyan Red Cross. Ethiopia is one of eight countries that will account for more than half of the increase in global population up to 2050. AFP
Filipino Catholics queue up to mark Ash Wednesday, the official beginning of the Christian Lenten season in Manila. The Philippines is one of eight countries that will account for more than half of the increase in global population up to 2050. AFP
People attend a political rally in Dar es Salaam, Tanzania. More than half of the increase in global population up to 2050 will be concentrated in just eight countries — including Tanzania. AFP
World population to reach 8 billion by November - in pictures
