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A website was created by Justin Paulson from the University of California at Santa Cruz in 1994 to provide information on the conflict in the Chiapas region between the Mexican government and the Zapatista forces primarily in English [183] but later started posting information in Spanish at www.ezln.org. [184] The Zapatistas usage of the ...
The hominoids are descendants of a common ancestor.. Homo sapiens is a distinct species of the hominid family of primates, which also includes all the great apes. [1] Over their evolutionary history, humans gradually developed traits such as bipedalism, dexterity, and complex language, [2] as well as interbreeding with other hominins (a tribe of the African hominid subfamily), [3] indicating ...
In 1981, the first digital version of the Britannica was created for the LexisNexis service. [3] In 1990, the Britannica's sales reached an all-time high of $650 million, but Encarta, released in 1993, soon became a software staple with almost every computer purchase and the Britannica's market share plummeted.
[37] [10] According to one Britannica website, 46% of the articles in the 2007 edition were revised over the preceding three years; [41] however, according to another Britannica website, only 35% of the articles were revised over the same period. [42] The alphabetization of articles in the Micropædia and Macropædia follows strict rules. [43]
The earliest evidence for life on Earth includes: 3.8 billion-year-old biogenic hematite in a banded iron formation of the Nuvvuagittuq Greenstone Belt in Canada; [30] graphite in 3.7 billion-year-old metasedimentary rocks in western Greenland; [31] and microbial mat fossils in 3.48 billion-year-old sandstone in Western Australia. [32] [33 ...
Encyclopaedia Britannica, 15th edition. The one-volume Propædia is the first of three parts of the 15th edition of Encyclopædia Britannica, intended as a compendium and topical organization of the 12-volume Micropædia and the 17-volume Macropædia, which are organized alphabetically.
As of 2007, old encyclopedias whose copyright has expired, such as the 1911 edition of Britannica, are also the only free content English encyclopedias released in print form. However, works such as the Great Soviet Encyclopedia, which were created in the public domain, [citation needed] exist as free content encyclopedias in other languages.
The history of life on Earth traces the processes by which living and extinct organisms evolved, from the earliest emergence of life to the present day. Earth formed about 4.5 billion years ago (abbreviated as Ga, for gigaannum) and evidence suggests that life emerged prior to 3.7 Ga. [1] [2] [3] The similarities among all known present-day species indicate that they have diverged through the ...