Browse Reference Articles
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Bronze Age
The Bronze Age is a period in a civilization's development when the most advanced metalworking consisted of techniques for smelting copper and tin from naturally occurring outcroppings of ore, and ... > more -
Chichen Itza
Chichen Itza is a large pre-Columbian archaeological site built by the Maya civilization, located in the northern center of the Yucatán Peninsula, present-day Mexico. From roughly 600 CE in ... > more -
Geologic temperature record
This article is devoted to temperature changes in Earth's environment as determined from geologic evidence on multi-million to billion (109) year time scales. The last 3 million years have been ... > more -
Homo (genus)
Homo is the genus that includes modern humans and their close relatives. The genus is estimated to be between 1.5 and 2.5 million years old. All species except Homo sapiens are extinct. Homo ... > 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 -
Chimpanzee
Chimpanzee, often shortened to chimp, is the common name for the two extant species in the genus Pan. The better known chimpanzee is Pan troglodytes, the Common Chimpanzee, living primarily in West, ... > more -
Triceratops
Triceratops, meaning "three-horned face", because it had three horns was a ceratopsid herbivorous dinosaur genus from the Latest Cretaceous period of what is now North America. It lived at around the ... > more
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