Vol. 198 No. 1
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cover of July 4, 2020 & July 18, 2020 issue

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More Stories from the July 4, 2020 issue

  1. Chemistry

    Here’s a clue to how this tube worm’s slime can glow blue for days

    Mucus oozed by a marine tube worm can glow for up to 72 hours. New results suggest that the light may sustain itself through some clever chemistry.

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  2. Ecosystems

    Tapirs may be key to reviving the Amazon. All they need to do is poop

    Brazilian ecologist Lucas Paolucci is collecting tapir dung to understand how the piglike mammals may help restore degraded rain forests.

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  3. Space

    The Milky Way’s giant gas bubbles were seen in visible light for the first time

    Variation in the light’s wavelengths could help scientists map the velocity of the gas that makes up the towering structures known as Fermi bubbles.

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  4. Health & Medicine

    Taking hydroxychloroquine may not prevent COVID-19 after exposure

    Hydroxychloroquine didn’t protect health-care workers from getting sick after being exposed to someone with COVID-19, a new study shows.

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  5. Climate

    Rapid sea level rise could drown protective mangrove forests by 2100

    Mangroves have kept up with rising water so far, but new research reveals their limits.

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  6. Health & Medicine

    Loss of smell and taste may actually be one of the clearest signs of COVID-19

    Data from a symptom tracker smartphone app used by millions of people shows two-thirds of positive patients reported losing these senses.

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  7. Humans

    The Dead Sea Scrolls contain genetic clues to their origins

    Animal DNA is providing researchers with hints on how to assemble what amounts to a giant jigsaw puzzle of ancient manuscript fragments.

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  8. Earth

    Chicxulub collision put Earth’s crust in hot water for over a million years

    An asteroid impact 66 million years ago caused hot fluids to circulate in the crust, creating conditions that may have been ideal for microbial life.

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  9. Space

    A weird cosmic flare called the ‘Cow’ now has company

    Scientists have now found three similar luminous, short-lived bursts of light, part of a class known as fast blue optical transients.

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  10. Life

    These tube-shaped creatures may be the earliest known parasites

    Fossils from over 500 million years ago might be the first known example of parasitism in the fossil record, though the evidence isn’t conclusive.

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  11. Space

    A Milky Way flash implicates magnetars as a source of fast radio bursts

    A bright radio burst seen from a magnetar in the Milky Way suggests that similar objects produce the mysterious fast radio bursts observed in other galaxies.

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  12. Life

    Scientists want to build a Noah’s Ark for the human microbiome

    Just as the Svalbard Global Seed Vault protects global crop diversity, the Microbiota Vault may one day protect the microbes on and in our bodies.

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  13. Quantum Physics

    This weird quantum state of matter was made in orbit for the first time

    Bose-Einstein condensates made on the International Space Station could reach temperatures lower than any known in the universe.

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  14. Space

    50 years ago, NASA prepared to launch America’s first space station

    In 1970, NASA was building Skylab. The orbiting laboratory led to many scientific firsts but was plagued by technical difficulties.

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