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Maya civilization
The Maya civilization is a Mesoamerican civilization, noted for the only known fully developed written language of the pre-Columbian Americas, as well as its spectacular art, monumental architecture, ... > more -
Anthropology
Anthropology is the study of humanity. Anthropology has origins in the natural sciences, the humanities, and the social sciences. Since the work of Franz Boas and Bronisław Malinowski in the ... > more -
Structural alignment
Structural alignment is a form of sequence alignment based on comparison of shape. These alignments attempt to establish equivalences between two or more polymer structures based on their shape and ... > more -
Inca Empire
The Inca Empire was an empire centered in what is now Peru from AD 1438 to AD 1533.The Inca people began as a tribe in the Cuzco area around the 12th century ... > more -
Natural selection
Natural selection is the phrase Charles Darwin used in 1859 for the process he proposed to explain the origin of species and their apparent adaptation to their environment. Along with the rules of ... > 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 -
Global warming
Global warming refers to the increase in the average temperature of the Earth's near-surface air and oceans in recent decades and its projected continuation. The global average air temperature ... > more -
Mesopotamia
Mesopotamia was home to some of the oldest major ancient civilizations, including the Sumerians, Akkadians, Persians, Babylonians and Assyrians. Mesopotamia housed some of the world's most ancient ... > more -
Crane (machine)
A crane is a tower or derrick equipped with cables and pulleys that can be used both to lift and lower materials and to shift them horizontally. Cranes are commonly employed in the construction ... > more
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