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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.
History is a wide field of inquiry encompassing many branches. Some branches focus on a specific time period. Others concentrate on a particular geographic region or a distinct theme. Specializations of different types can usually be combined. For example, a work on economic history in ancient Egypt merges temporal, regional, and thematic ...
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 ...
The paradigm examples of essence-existence composites are material substances like cats or trees. Aquinas incorporates Aristotle's distinction between matter and form by holding that the essence of material things, as opposed to the essence of immaterial things like angels, is the composition of their matter and form.
The timeline of the evolutionary history of life represents the current scientific theory outlining the major events during the development of life on planet Earth. Dates in this article are consensus estimates based on scientific evidence , mainly fossils .
Origin myths are narratives that explain how a particular reality came into existence. [3] They often serve to justify the established order by attributing its establishment to sacred forces [3] (see § Social function). The line between cosmogonic myths which describe the origin of the world and origin myths is not always clear.
History didn't start with the first humans—they were cavemen! The Stone Age wasn't history; the Stone Age was a preamble to history, a dystopian era of stasis before the happy onset of civilization, and the arrival of nifty developments like chariot wheels, gunpowder, and Google. History started with agriculture, nation-states, and written ...
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.