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The Cretaceous–Paleogene (K–Pg) extinction event, [a] also known as the K–T extinction, [b] was the mass extinction of three-quarters of the plant and animal species on Earth [2] [3] approximately 66 million years ago.
Venus's equator rotates at 6.52 km/h (4.05 mph), whereas Earth's rotates at 1,674.4 km/h (1,040.4 mph). [ note 2 ] [ 153 ] Venus's rotation period measured with Magellan spacecraft data over a 500-day period is smaller than the rotation period measured during the 16-year period between the Magellan spacecraft and Venus Express visits, with a ...
Artificial intelligence (AI), in its broadest sense, is intelligence exhibited by machines, particularly computer systems.It is a field of research in computer science that develops and studies methods and software that enable machines to perceive their environment and use learning and intelligence to take actions that maximize their chances of achieving defined goals. [1]
The Neanderthal braincase averages 1,640 cm 3 (100 cu in) for males and 1,460 cm 3 (89 cu in) for females, [29] which is significantly larger than the averages for all living populations. [31] The largest Neanderthal brain, Amud 1 , was calculated to be 1,736 cm 3 (105.9 cu in), one of the largest ever recorded in humans. [ 30 ]
A dramatic decrease has also been recorded in the number of calls between animals (decreasing from 3.4 to 10.5 calls/min to 0 or <1) after exposure to the noise produced by ships, the effect being most persistent and pronounced with larger ships such as ferries than with smaller boats. [183]
[3] [4] [5] The Political Instability Task Force estimated that 43 genocides occurred between 1956 and 2016, resulting in 50 million deaths. [6] The UNHCR estimated that a further 50 million had been displaced by such episodes of violence. [6]
Field Marshal John Denton Pinkstone French, 1st Earl of Ypres, KP, GCB, OM, GCVO, KCMG, PC (28 September 1852 – 22 May 1925), known as Sir John French from 1901 to 1916, and as The Viscount French between 1916 and 1922, was a senior British Army officer.