Concern about the size of the world's population did not begin with the "population bomb" in 1968. It arose in the aftermath of World War I and was understood as an issue with far-reaching ecological, agricultural, economic, and geopolitical consequences. The world population problem concerned...
摘要: BackgroundPopulation ageing is an increasingly severe global issue. And this has been posing challenges for public health policies and medical resource allocation There are various features of population ageing in different regions worldwide.关键词: Spatiotemporal evolution, Global population ageing...
2]. A transformation of the major health threats has been occurring due to population ageing. In the early twentieth century, the major health threats were communicable diseases, infectious and parasitic diseases, which most often claimed
TED_Hans Rosling on global population growth Clickonanyphrasetoplaythevideofromthatpoint. Istillrememberthedayinschoolwhenourteachertoldusthattheworldpopulationhadbecomethreebillionpeople,andthatwasin1960.I'mgoingtotalknowabouthowworldpopulationhaschangedfromthatyearandintothefuture,butIwillnotusedigital...
Worldwide, the male population is slightly higher than the female population. However, the sex ratio within individual populations varies from country to country. Different factors play a role in gender distribution, such as sex ratio at birth, life expectancy, and immigration. Women have a ...
作者: nbsp; United Nations Population Fund 摘要: International population assistance became a distinct form of aid in the 1950s . Since then assistance grew until 1972 when it reached US $400 million. In 1985 it reached its highest peak of US $512.5 million and has since declined to below ...
The population projection data we used to create this graphic is listed in the table below. Note that UN projections are as of 2022, IHME are as of 2020, and IIASA are as of 2014. YearUNIHMEIIASA 2050 9,687,440,000 9,551,506,077 9,140,396,000 2060 10,053,522,000 9,719,318,27...
In 2022, the global youth literacy rate as gender parity index amounted to 0.97, which was an increase of around 0.2 compared to 10 years ago. On average, males are more literate than females worldwide, both among the youth and adult population....
Rural population, percent of total population, 2023: The average for 2023 based on 196 countries was 38.64 percent. The highest value was in Papua New Guinea: 86.28 percent and the lowest value was in Bermuda: 0 percent. The indicator is available from 1960 to 2023. Below is a chart for...
population pressures, and where native vegetation has not been significantly removed, particularly in the interior deserts and tropical savannas37. Contrary to what has happened in other continents, where the main causes of extinction were habitat loss and overhunting10, the decline of most Australian...