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  1. Health & Medicine

    Beyond Blood

    Bloodless MRI seeks a more direct window into the working brain than conventional techniques.

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  2. Astronomy

    Supernova Outbreak: X rays signal earliest alert

    Thanks to a lucky break and an overactive galaxy, astronomers report the earliest detection yet of a normal supernova—the explosive death of a massive star.

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  3. Humans

    From the March 5, 1938, issue

    Shoes that give silent testimony for safety measures, ten moons and counting for Saturn, and finding oil in impossible places.

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  4. Humans

    One-Stop Shopping for Every Species

    On Feb. 26, the Encyclopedia of Life went live.