Kim Kardashian and Donald Trump exemplify our contradictory feelings about the rich and famous. As Hidden Brain explores this week, we idolize the powerful, but also relish their downfall.
Human sacrifice helped solidify systems of social hierarchy, according to a new study of traditional cultures in the Pacific Ocean. Here, an engraving shows English explorer James Cook witnessing a human sacrifice ritual in Taihiti in the 1770s. The image comes from the 1815 edition of Cook's Voyages.
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Easter Island is known best for its hundreds of colossal stone statues depicting human figures. The causes of its societal and economic collapse centuries ago are fiercely debated among scientists.
Luis C. Cobo/Flickr
This clay facial reconstruction of Kennewick Man, who died about 8,500 years ago in what's now southeast Washington, was based on forensic scientists' study of the morphological features of his skull.
Brittney Tatchell/Smithsonian Institution