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The Spanish region of Catalonia recently voted for independence. What does this mean for Europe and the U.S.?
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Businesses - and even some countries - are moving toward eliminating the use of cash, a trend that worries some economists and privacy advocates.
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As North Korea and the U.S. edge closer to a nuclear conflict, a look at how the atomic age began 75 years ago
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Two experts weigh in on the issue.
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The world's last male northern white rhino is being safeguarded by the Kenyan military.
College students are developing social media campaigns to combat online radicalization.
The Chinese space administration has plans to grow potatoes on the moon.
Quirky stats about feeding the world, discarded Swiss gold, drought, and more
The countries with the most expensive public college tuition
DNA testing shows that an elite 10th-century Viking warrior was female.
Must a runner warn those behind him about upcoming obstacles?