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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Saguaro Cacti Thrive When the World's Massive Volcanoes Erupt, Study Finds
Lucky Tetrachromats See World With Up to 100 Million Colors
It's the End of Moore's Law as We Know It (But Not Really)
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