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  1. Physics

    Carbon’s mysterious magnetism

    An X-ray experiment has yielded the most conclusive evidence to date that carbon can be magnetic.

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  2. Planetary Science

    Powering Enceladus’ plumes

    The action of Saturn's gravity is responsible for plumes of water vapor shooting out from cracks on the moon Enceladus.

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  3. Health & Medicine

    Stem cells not required

    Insulin-producing cells in the pancreas proliferate by cell division, unlike other body tissues, which regenerate from adult stem cells.

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  4. 19838

    I would debate the “1,000 watts or more” value attributed to typical adults during strenuous exercise as mentioned in this story.