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  1. Space

    Jupiter’s intense auroras superheat its upper atmosphere

    Jupiter’s hotter-than-expected upper atmosphere may be caused by high-speed charged particles slamming into the air high above the poles.

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  2. Life

    Probiotics help lab corals survive deadly heat stress

    In a lab experiment, probiotics prevented the death of corals under heat stress, suggesting beneficial microbes could help save ailing reefs.

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  3. Health & Medicine

    How different COVID-19 testing plans can help keep kids safe in school

    As children head back to school in the United States, here’s a look at various testing strategies that could keep kids safe during in-person learning.

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  4. Astronomy

    Measuring a black hole’s mass isn’t easy.