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From New World Encyclopedia
New World Encyclopedia integrates facts with values. Written by certified experts.
Featured Article: Neoproterozoic
The Neoproterozoic is the terminal era of the Proterozoic eon (or informally, the Precambrian) extending from about 1,000 million years ago (mya) at the end of the Mesoproterozoic to 542 mya at the beginning of the Cambrian of the Paleozoic era. It is one of three major divisions (eras) of the Proterozoic in the geologic time scale. It covers one of the more interesting times in the geological record, during which the Earth was hit by the most severe glaciations; and in the later parts of the era, the Ediacaran period, the earliest evidence of multi-celled life is found, including the earliest animals.
Popular Article: Topography
Topography (Greek topos, "place," and graphia, "writing") is the study of Earth's surface features or those of planets, moons, and asteroids. In the broadest sense, topography is concerned with local detail in general, including not only relief but also vegetative and human-made features, and even local history and culture. Topography specifically involves the recording of relief or terrain, the three-dimensional quality of the surface, and the identification of specific landforms. In modern usage, this involves generation of elevation data in electronic form.
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