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This is a timeline of HIV/AIDS, including but not limited to cases before 1980. Pre-1980s See also: Timeline of early HIV/AIDS cases Researchers estimate that some time in the early 20th century, a form of Simian immunodeficiency virus found in chimpanzees (SIVcpz) first entered humans in Central Africa and began circulating in Léopoldville (modern-day Kinshasa) by the 1920s. This gave rise ...
It continues to outline that the earliest known case of AIDS in an adult IDU occurred in 1979 (mixed risk) and that known cases among IDUs increased rapidly from the 8 cases in 1980 (3 mixed risk), to 31 cases in 1981, to 160 cases in 1982, and to 340 cases in 1983. [ 85]
History of masturbation. The history of masturbation describes broad changes in society concerning the ethics, social attitudes, scientific study, and artistic depiction of masturbation over the history of sexuality. The sexual stimulation of one's own genitals has been interpreted variously by different religions, and has been the subject of ...
Year Event Type Death toll Notes and sources 1983–present HIV/AIDS epidemic: disease 84,027+ [1] [a]2020–2023 COVID-19 pandemic: disease 38,795–45,194
The timeline of human evolution outlines the major events in the evolutionary lineage of the modern human species, Homo sapiens, throughout the history of life, beginning some 4 billion years ago down to recent evolution within H. sapiens during and since the Last Glacial Period . It includes brief explanations of the various taxonomic ranks in ...
Human history. Human history is the record of humankind from prehistory to the present. Modern humans evolved in Africa around 300,000 years ago and initially lived as hunter-gatherers. They migrated out of Africa during the Last Ice Age and had populated most of the Earth by the end of the Ice Age 12,000 years ago.
The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations ...
Claimed "oldest known drawing by human hands", discovered in Blombos Cave in South Africa. Estimated to be a 73,000-year-old work of a Homo sapiens. [136] The equivalent of the Eurasian Upper Paleolithic in African archaeology is known as the Later Stone Age, also beginning roughly 40,000 years ago.