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In world demographics, the world population is the total number of humans currently living. It was estimated by the United Nations to have exceeded eight billion in mid-November 2022. It took around 300,000 years of human prehistory and history for the human population to reach a billion and only 222 years more to reach 8 billion.
Population estimates cannot be considered accurate to more than two decimal digits; for example, the world population for the year 2012 was estimated at 7.02, 7.06, and 7.08 billion by the United States Census Bureau, the Population Reference Bureau, and the United Nations Department of Economic and Social Affairs, respectively, corresponding ...
Gathers population information every 10 years; Census data is used to determine how seats of Congress are distributed to states. Census data is not used to determine or define race genetically, biologically or anthropologically. The census data is also used by the Bureau to obtain a real-time estimate in U.S. and World Population Clock.
It projected the world's population will reach around 8.5 billion in 2030, 9.7 billion in 2050 and 10.4 billion in 2100.
Worldometer, [1] formerly Worldometers, is a reference website that provides counters and real-time statistics for diverse topics. It is owned and operated by a data company Dadax [2] [failed verification] [3] which generates revenue through online advertising. [4] It is available in 31 languages and covers subjects such as government, world ...
The Shortt–Synchronome clock, an electrical driven pendulum clock designed in 1921, was the first clock to be a more accurate timekeeper than the Earth itself. [167] A succession of innovations and discoveries led to the invention of the modern quartz timer. The vacuum tube oscillator was invented in 1912. [168]
Cartogram of the world's population in 2018; each square represents 500,000 people. This is a list of countries and dependencies by population. It includes sovereign states, inhabited dependent territories and, in some cases, constituent countries of sovereign states, with inclusion within the list being primarily based on the ISO standard ISO ...
Below is a list of countries and regions of the world with their projected population, as estimated by the UN Department of Economic and Social Affairs, as of July 11, 2022. The Medium variant of the forecast for July 1, 2024, July 1, 2030, July 1, 2050 and July 1, 2100 is given.
In 1862, the physicist William Thomson, 1st Baron Kelvin published calculations that fixed the age of Earth at between 20 million and 400 million years. He assumed that Earth had formed as a completely molten object, and determined the amount of time it would take for the near-surface temperature gradient to decrease to its present value.
The first population census was taken in 1749 when Finland was a part of Sweden. Although the parliament authorized a modern census in 1938, it was not undertaken until 1950. Finland has an accurate population registry system, thus censuses are in practice conducted by studying the registry, rather than as a separate project.