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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 ...
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 spread across Earth's continental land except Antarctica by the end of the Ice Age 12,000 years ago.
It was the last book he finished in his lifetime, running to some 90 pages of a single long essay. It is commonly referred to as his " Freiheitsschrift " (freedom text) or "freedom essay". Described by Hans Urs von Balthasar as "the most titanic work of German idealism ", [ 1 ] it is also seen as anticipating much of the collection of basic ...
During the Paleozoic, many modern groups of life came into existence. Life colonized the land, first plants, then animals. Two significant extinctions occurred. The continents formed at the break-up of Pannotia and Rodinia at the end of the Proterozoic slowly moved together again, forming the supercontinent Pangaea in the late Paleozoic. [148]
The evolutionary history of species has been described as a "tree" with many branches arising from a single trunk. While Haeckel's tree is outdated, it illustrates clearly the principles that more complex and accurate modern reconstructions can obscure.
Creation myths have been around since ancient history and have served important societal roles. Over 100 "distinct" ones have been discovered. [20] All creation myths are in one sense etiological because they attempt to explain how the world formed and where humanity came from. [21] Myths attempt to explain the unknown and sometimes teach a lesson.
The Zaidiyyah historically come from the followers of Zayd ibn Ali. The Alawites are a distinct religion that developed in the 9th/10th century. Historically, Twelver Shia scholars (such as Shaykh Tusi) did not consider Alawites as Shia Muslims while condemning their heretical beliefs. [108] Ibn Taymiyyah also pointed out that Alawites were not ...
In this sense, history is what happened rather than the academic field studying what happened. When used as a countable noun, a history is a representation of the past in the form of a history text. History texts are cultural products involving active interpretation and reconstruction. The narratives presented in them can change as historians ...