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After studying various species earlier this month, some scientists now say they understand the origin of animal behavior during solar eclipses.
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Fifteen years after the EPA said greenhouse gasses are a danger to public health, the agency finalized rules to limit climate-warming pollution from existing coal and new gas power plants.
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Trump's argument for immunity is broad: He contends that he cannot be prosecuted for his "official acts" as president unless he is first impeached, convicted by the Senate and removed from office.