China, Russia and the European Union have developed satellite networks offering global-positioning services as the U.S. system ages
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'Ring of fire' solar eclipse will cut across the Americas, stretching from Oregon to BrazilA rare “ring of fire” eclipse of the sun is about to cut across the Americas, from Oregon to Brazil
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'Ring of fire' solar eclipse will cut across the Americas, stretching from Oregon to BrazilA rare “ring of fire” eclipse of the sun is about to cut across the Americas, from Oregon to Brazil.
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