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What the Amazon Looked Like Before ColumbusAncient humans had little impact on the outlying forests of the Amazon Basin, a study suggests.
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Nitrogen Contamination Found in California WaterOne in 10 people living in a productive agricultural area of central California is at risk for nitrate contamination in their drinking water.
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Farming in America (Infographic)GoFigure looks at agriculture in America.
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Ancient Herders' Walls Guided Gazelles to Mass SlaughterThe use of these formations could have led to the local extinction of these grazing animals.
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Vulnerable Gorilla Owes Fate to Climate Change and HumansClimate change and then humans appear to have isolated a vulnerable population of gorillas.
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Hens Feel for Their Chicks' DiscomfortThey display both physiological and behavioral responses when their chicks are distressed.
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Tower of Power: Mystery of Ancient Jericho Monument RevealedResidents of the settlement may have built the stone monument to mark the summer solstice.
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'Doomsday Vault' Gets New, Large Shipment of RiceThe rice seeds are duplicates of those stored in a genebank and act as a backup in case of a natural or man-made disaster.
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Beer Lubricated the Rise of Civilization, Study SuggestsAn archaeologist has evidence beer may have helped lead to the rise of civilization.
