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The web page lists current estimates of the world population in history, with a range of 1.3 to 1.4 billion for 1900. It also provides historical and prehistorical population data, as well as comparisons and sources.
Learn about the history, current status and future projections of the world population, which was estimated to have exceeded eight billion in mid-November 2022. Find out how the population has changed over time, by continent, and by age group.
Learn about the statistical measure of the average remaining years of life at a given age, and how it varies by region, sex, and time period. Explore the history and patterns of human life expectancy from pre-modern to modern societies, and the factors that influence it.
Learn about the origins and development of humans from prehistory to the present, based on archaeological, anthropological, and genetic evidence. Find out how humans evolved in Africa, migrated out of Africa, and adapted to different environments and cultures.
Learn about the estimated population of Indigenous peoples of the Americas before and after European colonization, and the factors that contributed to their decline. Find out how many Native Americans were killed by diseases, violence, and other causes.
Learn about the reconstructed record of human population in the past, from ancient times to the present. Explore the factors, trends, and patterns of population growth, decline, and distribution across continents and regions.
This web page outlines the major events in the evolutionary lineage of modern humans, from 4 billion years ago to recent times. It does not answer the question of who was the first person on Earth, but it provides some historical context and background information on human origins.
Death is the end of life and the irreversible cessation of all biological functions that sustain a living organism. Learn about the different ways to define death, the most common causes of death, and the various beliefs and customs related to death and the afterlife.