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  1. Physics

    Sound waves can make bubbles in levitated drops of liquid

    A new technique reveals how to make bubbles from droplets suspended in the air.

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  2. Neuroscience

    How obesity may harm memory and learning

    In obese mice, immune cells chomp nerve cell connections and harm brainpower.

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  3. Physics

    A new hydrogen-rich compound may be a record-breaking superconductor

    The record for the highest-temperature superconductor may be toast.

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  4. Climate

    Wildfires make their own weather, and that matters for fire management

    Mathematical equations describing interactions between wildfires and the air around them help explain their power and destruction.