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  1. Gold-Metal Results: Compounds block immune proteins

    Metals such as platinum and gold keep certain proteins from stimulating the body's immune response.

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  2. Earth

    Smoldered-Earth Policy: Created by ancient Amazonian natives, fertile, dark soils retain abundant carbon

    Amazonian dark earth, or terra preta in Portuguese, is attracting scientific attention for its high productivity, mysterious past, and ability to store carbon.

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  3. Health & Medicine

    Gender Gap: Male-only gene affects men’s dopamine levels

    A gene found only in men affects the brain's production of dopamine, a finding that may help explain why men are more likely than women to develop Parkinson's disease and other dopamine-related illnesses.

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  4. Astronomy

    Unique Explosion: Gamma-ray burst leads astronomers to supernova

    Astronomers have found a supernova associated with the second-closest-known gamma-ray burst, confirming a model in which bursts arise from material blasted into space by a supernova explosion.