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  1. Math

    The Power of Partitions

    Writing a whole number as the sum of smaller numbers springs a mathematical surprise.

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  2. Physics

    Connect the Dots

    Transforming sunlight into electricity by means of quantum dust.

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  3. Physics

    Stretched matter goes to unusual extremes

    Researchers have discovered that several unusual forms of matter with extremely high or low densities can expand laterally in one direction and contract in another when extended.

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  4. Animals

    Single singing male toad seeks same

    Male spadefoot toads of the Spea multiplicata species evaluate male competitors by the same criterion females use.

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  5. Mice have a sharp nose for pheromones

    Mice can detect pheromones with great sensitivity and in a way that's distinct from that of the main olfactory system.