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  1. Physics

    Elusive particle shows up in ‘semimetal’

    Weyl fermions, which resemble massless electrons, have been spotted inside tantalum arsenide. Their discovery comes 86 years after they were proposed.

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  2. Plants

    Defense hormones guide plant roots’ mix of microbes

    Plants use salicylic acid to attract some bacteria to roots and repel others.

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  3. Climate

    Current El Niño coming on strong

    Meteorologists expect the ongoing El Niño to strengthen in the coming months and alter weather patterns worldwide, including bringing potential drought relief to California.

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  4. Genetics

    Melonomics: Sounds like a cancer, smells like a melon

    The project that published the first melon genome dubbed itself melonomics.

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  5. Planetary Science

    Mission to Pluto: Live coverage

    The New Horizons spacecraft is scheduled to fly by Pluto on July 14. Check back often for frequent updates on the status of the mission, updates from mission control, and the latest images.

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  6. Neuroscience

    ‘Speed cells’ found in rats’ brains

    Newly discovered “speed cells” clock rats’ swiftness.

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  7. Climate

    Wildfire seasons have gotten almost 20 percent longer

    The average length of wildfire seasons has increased 18.7 percent since 1979, new research shows.

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  8. Neuroscience

    Putting time’s mysteries in order

    Investigating both the orderly and disorderly dimensions of time provides the focus for a special issue of Science News.

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  9. Earth

    Bringing mammoths back, life on early Earth and more reader feedback

    Readers debate the pros and cons of reviving extinct species, discuss the odd light-processing machinery of the eye and more.

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  10. Neuroscience

    Special Report: Dimensions of Time

    Science News writers report on the latest scientific investigations into time’s place in the physical, biological and mental worlds.

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  11. Science & Society

    A brief history of timekeeping

    For millennia, humans have harnessed the power of clocks to schedule prayers, guide ocean voyages and, lately, to chart the universe.

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  12. Neuroscience

    How the brain perceives time

    To perceive time, the brain relies on internal clocks that precisely orchestrate movement, sensing, memories and learning.

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