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Nuclear war is an often-predicted cause of the extinction of humankind. [1]Human extinction or omnicide is the hypothetical end of the human species, either by population decline due to extraneous natural causes, such as an asteroid impact or large-scale volcanism, or via anthropogenic destruction (self-extinction), for example by sub-replacement fertility.
Neanderthals became extinct around 40,000 years ago. Hypotheses on the causes of the extinction include violence, transmission of diseases from modern humans which Neanderthals had no immunity to, competitive replacement, extinction by interbreeding with early modern human populations, natural catastrophes, climate change and inbreeding depression.
Mass extinctions are characterized by the loss of at least 75% of species within a geologically short period of time (i.e., less than 2 million years). [18] [51] The Holocene extinction is also known as the "sixth extinction", as it is possibly the sixth mass extinction event, after the Ordovician–Silurian extinction events, the Late Devonian extinction, the Permian–Triassic extinction ...
This article is a list of biological species, subspecies, and evolutionary significant units that are known to have become extinct during the Holocene, the current geologic epoch, ordered by their known or approximate date of disappearance from oldest to most recent.
The reasons for Neanderthal extinction are disputed. [16] [17] Theories for their extinction include demographic factors such as small population size and inbreeding, competitive replacement, [18] interbreeding and assimilation with modern humans, [19] change of climate, [20] [21] [22] disease, [23] [24] or a combination of these factors. [22]
The Tibetan Plateau has more snow and ice than anywhere on Earth except the north and south poles, experts said.
The early modern human vocal apparatus is generally thought to have been the same as that in present-day humans, as the present-day variation of the FOXP2 gene associated with the neurological prerequisites for speech and language ability seems to have evolved within the last 100,000 years, [125] and the modern human hyoid bone (which supports ...
How did cockroaches survive the asteroid that led to the extinction of dinosaurs? – Kinjal, age 11, Delhi, India When the rock now known as the Chicx.