Search results
Results From The WOW.Com Content Network
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.
Date(s) (CE) Claimant(s) Description Ref. 66–70 ... an asteroid impacting with Earth would need to be larger than 1 km in diameter to render humans extinct. It is ...
Extinction Date Probable causes [2] Quaternary: Holocene extinction: c. 10,000 BC – Ongoing: Humans [3] Quaternary extinction event: 640,000, 74,000, and 13,000 years ago: Unknown; may include climate changes, massive volcanic eruptions and Humans (largely by human overhunting) [4] [5] [6] Neogene: Pliocene–Pleistocene boundary extinction: 2 Ma
Scientists say they have pinpointed the moment humanity almost went extinct. Katie Hunt, CNN. September 5, 2023 at 12:31 PM ... the oldest DNA from a human species dates to around 400,000 years ago.
Increased human and cattle pressure after the introduction of prickly pear farming. [107] Its specific separation from the common hippopotamus has been questioned. [180] 1671-1672: Réunion blue pigeon: Alectroenas sp. Réunion: 1704 Probably hunting and predation by introduced cats. [69] Réunion sheldgoose: Alopochen kervazoi: 1710 1988 (IUCN)
Nevertheless, by the end of the Ice Age some 12,000 years ago, humans had colonized nearly all ice-free parts of the globe. [38] Human expansion coincided with both the Quaternary extinction event and the Neanderthal extinction. [39] These extinctions were probably caused by climate change, human activity, or a combination of the two. [40]
Human-driven extinction started as humans migrated out of Africa more than 60,000 years ago. [38] ... the arbitrary date selected to define "recent" extinctions, up ...
A big question plaguing paleoanthropologists - that is, people who study ancient humans - is just when did Neanderthals disappear? Most thought our early human ancestors went extinct about 30,000 ...