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A Valeriepieris circle [1] [2] [3] is a figure drawn on the Earth's surface such that the majority of the human population lives within its interior. The concept was originally popularized by a map posted on Reddit in 2013, made by a Texas ESL teacher named Ken Myers, whose username on the site gave the figure its name. [ 4 ]
Elite Dangerous [a] is an online space flight simulation game developed and published by Frontier Developments. The player commands a spaceship and explores a realistic 1:1 scale , open-world representation of the Milky Way galaxy, with the gameplay being open-ended .
Frontier had been planning a new Elite sequel, under the working title Elite 4, since 1998. The company completed a successful Kickstarter campaign at the end of 2012, where the new sequel's name Elite: Dangerous was revealed. Early-access versions of the game have been playable by backers since December 2013.
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Graph of world population over the past 12,000 years . As a general rule, the confidence of estimates on historical world population decreases for the more distant past. Robust population data exist only for the last two or three centuries. Until the late 18th century, few governments had ever performed an accurate census.
The following is a list of the largest satellite cities worldwide, with over 500,000 people. A satellite city is defined as subordinate to a central city in a business or infrastructure sense, and it may or may not have more population than the central city due to arbitrary municipal definitions.
The mean center, or centroid, is the point on which a rigid, weightless map would balance perfectly, if the population members are represented as points of equal mass. Mathematically, the centroid is the point to which the population has the smallest possible sum of squared distances. It is easily found by taking the arithmetic mean of each ...
WorldPop develops statistical population modelling methods to produce gridded population estimates that support census activities. [11] [12] The programme develops new methods for data synthesis that use demographic and health surveys, census, satellite imagery, [13] cell phone [14] and other data to create consistent gridded outputs [15] and map detailed population densities.