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  1. Physics

    Molecules face the big chill

    Scientists have cooled molecules below a previously impassable limit.

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  2. Life

    How horses lost their toes

    Fossils reveal that as horses evolved to have fewer toes, they also got stronger and faster.

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  3. Physics

    Scientists create the most cubic form of ice crystals yet

    Ice has taken on a strange structure, with its water molecules arranged in nearly perfect cubes.

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  4. Planetary Science

    ‘Death Dive to Saturn’ celebrates the Cassini probe’s accomplishments

    A new documentary, “Death Dive to Saturn,” takes a look back at the Cassini spacecraft’s 13 years at Saturn and what to expect from its final days.