Ecological footprint
The ecological footprint is a measure of human demand on the Earth’s ecosystems, the amount of natural capital used each
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This entry provides the total expenditure on health as a percentage of GDP. Health expenditures are broadly defined as activities
Read more: Health expendituresPoorest countries in the world
From 1990 to 2015, extreme global poverty decreased, on average, by a percentage point. From 2015 and 2018 severe poverty
Read more: Poorest countries in the world
Africa’s 50 Most Populous Cities in 2025
Cairo holds 25.6 million people, nearly double Lagos. Nigeria places 9 cities in the top 50. Cities like Luanda, Dar es Salaam, and Addis Ababa are growing so fast the global urban rankings will look completely different by 2050.
Read more: Africa’s 50 Most Populous Cities in 2025