Browse Reference Articles
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Ancient Rome
Ancient Rome was a civilization that grew out of the city-state of Rome, founded on the Italian peninsula around 800 BC. During its twelve-century existence, the Roman civilization shifted from a ... > more -
Stone tool
A stone tool is, in the most general sense, any tool made of stone. Although stone-tool-dependent cultures exist even today, most stone tools are associated with prehistoric societies that no longer ... > more -
Ancient Egypt
Ancient Egypt was a long-lived civilization in north-eastern Africa. It was concentrated along the middle to lower reaches of the Nile River, reaching its greatest extension during the second ... > more -
Peking Man
Peking Man (sometimes now called Beijing Man), also called Sinanthropus pekinensis (currently Homo erectus pekinensis), is an example of Homo erectus. The remains were first discovered in 1923-27 ... > more -
Convergent evolution
In evolutionary biology, convergent evolution is the process whereby organisms not closely related (not monophyletic), independently evolve similar traits as a result of having to adapt to similar ... > more -
Timeline of evolution
This timeline of the evolution of life outlines the major events in the development of life on the planet Earth. Dates given are estimates based on scientific evidence. In biology, evolution is the ... > more -
Archaeological field survey
Archaeological field survey is the methodological process by which archaeologists (often landscape archaeologists) collect information about the location, distribution and organisation of past human ... > more -
Earth Science
Environmental Issues
Global Warming
Geomagnetic Storms
Near-Earth Object Impacts
Anthropology
End of civilization
The end of civilization or the end of the world are phrases used in reference to human extinction scenarios, doomsday events, and related hazards which occur on a global ... > more -
Evolution of cetaceans
The cetaceans (whales, dolphins and porpoises) are descendants of land-living mammals, and remnants of their terrestrial origins can be found in the fact that they must breathe air from the surface; ... > more
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