From the southern tip of Florida to the Alaskan wilderness, explore North American history in-depth in the North American history section.
Explore the development of the United States with this collection of articles about American history. Topics in this section include the American Revolution, the gold rush and the expansion of the West. See more »
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Why Didn't Evolution Give Us the Ability to Smell Fresh Water?
There Are 5 Types of Haunted House Visitors. Which One Are You?
Earthlings Crowdsource the Search for Martian 'Spiders'
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