Colombia produces the world’s most expensive emeralds. The highest-quality stones can be worth tens of thousands of dollars per carat. Miners have fought over these treasures for centuries, but in the ...
The San Jose was a marvel of 17th century technology. The Spanish galleon weighed more than a thousand tons, was made of wood ...
The National Interest is an award-winning online publication focusing on defense issues, national security, military affairs and hardware, foreign policy, and U.S. politics. The National Interest ...
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