Chemistry

  1. chocolate
    Chemistry

    Sweaty, vinegary and sweet odors mingle to make dark chocolate’s smell

    Scientists have worked out the chemistry of dark chocolate’s smell and reconstructed the aroma.

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  2. air quality station
    Environment

    Emissions of a banned ozone-destroying chemical have been traced to China

    Since 2013, eastern China has increased its annual emissions of a banned chlorofluorocarbon by about 7,000 metric tons, a study finds.

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  3. periodic table illustration
    Chemistry

    50 years ago, scientists fought over element 104’s discovery

    A conflict known as the Transfermium Wars marked a contentious struggle over the search for new elements beginning in the 1960s.

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  4. two-neutrino double electron capture
    Particle Physics

    This is the slowest radioactive decay ever spotted

    Scientists have made the first direct observations of an exotic type of radioactive decay called two-neutrino double electron capture.

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  5. helium hyrdide ion
    Chemistry

    The first type of molecule to form in the universe has been seen in space

    The chemistry of the universe began with helium hydride. Scientists have just seen it in outer space for the first time.

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  6. spider
    Materials Science

    Bacteria can be coaxed into making the toughest kind of spider silk

    Lab-altered bacteria have made a copy of a spider’s strongest silk strands, which could one day be used to make more sturdy materials.

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  7. fentanyl
    Health & Medicine

    A single-dose antidote may help prevent fentanyl overdoses

    Packing overdose medication into nanoparticles could help it better counteract dangerous synthetic opioids.

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  8. green icebergs
    Oceans

    Tiny bits of iron may explain why some icebergs are green

    Scientists originally thought the green hue of some icebergs came from carbon particles. Instead, iron oxides may color the ice.

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  9. uranium on the periodic table
    Chemistry

    Here’s how long the periodic table’s unstable elements last

    Most elements on the periodic table have at least one stable form. But some don’t. Here’s how long those unstable members endure.

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  10. GSI Helmholtz Center for Heavy Ion Research
    Chemistry

    Extreme elements push the boundaries of the periodic table

    The hunt for the next elements on the periodic table might turn up superheavy atoms that flaunt the rules of chemistry.

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  11. Science & Society

    Scientists set sail for the elusive island of stability

    Editor in Chief Nancy Shute discusses the search for the island of stability and the future of the periodic table.

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  12. vinyl flooring
    Chemistry

    Why kids may be at risk from vinyl floors and fire-resistant couches

    Children from homes with all vinyl floors and flame-retardant sofas show higher levels of some synthetic chemicals in their bodies than other kids.

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