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  1. Earth

    Unveiling hidden craters

    Earth is regularly bombarded by small meteorites, but most of the resulting craters are hard to find. A team reports finding one such crater in the forests of west-central Alberta.

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  2. Health & Medicine

    Protein found to set the heart’s cadence

    Researchers have discovered a molecular metronome that sets the rhythm of the heart and blood pressure.

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  3. Math

    Florence Nightingale: The passionate statistician

    Florence Nightingale pioneered the use of applied statistics to develop policy and developed novel ways of displaying them.

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  4. Earth

    Plate tectonics got an early start

    The chemistry of minerals preserved in Australian rocks suggests tectonic activity for Earth’s earliest eon.