Archive of articles published on the 20th of April 2012
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Strange cousins: Molecular alternatives to DNA, RNA offer new insight into life's origins
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Meat eating behind humans' spreading over the globe
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Marine scientists urge government to reassess oil spill response
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Accelerating climate change exerts strong pressure on Europe's mountain flora
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Researchers discover new genes contributing to autism, links to psychiatric disorders
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Warning signs from ancient Greek tsunami