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  1. Physics

    Vanishing Actor: Physicists unveil first invisibility cloak

    The first functional invisibility cloak, which operates at microwave frequencies, has emerged from the laboratory.

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  2. Quirky Cardiology: Crocs’ hearts may aid their digestion

    The crocodile's ability to direct oxygen-depleted blood to its stomach may be instrumental in digesting large, bony meals.

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  3. Chemistry

    Back on the Table? Element 118 is served up again

    A team of nuclear chemists from the United States and Russia have announced the brief reappearance of element 118.

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  4. Planetary Science

    A sunrise view of Mars

    The first high-resolution images sent by the Mars Reconnaissance Orbiter support the notion that water once flowed across much of the Red Planet.