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385 results

385 results for: chemistry

  1. Chemistry

    Pollutants: Up in flames

    Forest fires have the potential to release toxic industrial and agricultural pollutants previously trapped on soil. After glomming onto smoke particles, these chemicals can hitch long-distance rides — sometimes across oceans — before they’re grounded and contaminate some new region, scientists report.

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  2. Chemistry

    The element tin does what carbon will not

    New bonding suggests scientists may need to rethink heavy metal chemistry.

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  3. Chemistry

    Flowerless plants make fancy amber

    A new analysis suggests that ancient seed plants made a version of the fossilized resin credited to more modern relatives

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  4. Materials Science

    Breakup doesn’t keep hydrogel down

    Scientists create a new material that is strong, soft and self-healing.

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  5. Chemistry

    Concerned about BPA: Check your receipts

    Some cash register receipts offer the potential for relatively large exposures to an estrogen mimic.

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  6. Chemistry

    PCBs: When green paint isn’t ‘green’

    It seems we're literally painting the air -- from the Great Lakes to Antarctica -- with persistent pollutants. Including at least one whose safety has never been studied.

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  7. Chemistry

    2009 Science News of the Year: Molecules

    Tangles of collagen IV chains link at globules via sulfur-nitrogen bonding (illustrated above). Credit: Courtesy of Science/AAAS New bond in the basementBasements house hidden treasures — including a chemical bond never before seen in living things. Scientists have discovered that collagen fibers in the basement membrane — a tough, structural layer of cells that surrounds […]

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  8. Earth

    Toxic playgrounds

    No kid should ever play in arsenic. Especially at school. Yet many probably do, according to findings of a study presented today.

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  9. Chemistry

    Bad perfume: Cardboard’s intense scents

    Wet cardboard and food should not share the same air space.

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  10. Chemistry

    Nose knows noxious gases

    Dyes on a new sensor react to correctly identify toxic chemicals, scientists find.

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  11. Chemistry

    Case of the toxic gingerbread man

    Featured blog: A search for the source of some indoor-air anomalies turns up a surprising culprit.

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  12. Chemistry

    Aerosols cloud the climate picture

    A NASA model incorporates how atmospheric aerosols and greenhouse gases interact, yielding better estimates of the gases' warming and cooling effects.

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