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How the Spice Trade Changed the WorldPepper was once so valuable that it could be used to pay the rent.
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Arctic Pollution Dates to 1800sEarly Arctic expeditions found same haze that hovers over Arctic region now.
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Dusty Document Reveals First European Voyage up Delaware RiverThe nearly four-century-old document pinpoints the date Europeans first voyaged up the waterway.
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Incredible Batch of Rare and New Species DiscoveredAn expedition to Ghana yielded amazing finds, including eight new katydid species.
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Mount Everest Deadlier for Older HikersOn Mount Everest, youth and energy trumps age and experience.
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Chicken Bones Suggest Polynesians Found Americas Before ColumbusWhich came first–-the Polynesian chicken or the European?
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The Top 10 Intrepid Explorers -
Top 10 Most Incredible Animal Journeys -
Strange New Creatures Found in AntarcticaAs many as 30 new species, including a psychedelic octopus, have been found in one of the world's most pristine marine environments.
