News

  1. Health & Medicine

    Herbal therapy may carry cancer danger

    An herbal extract that some women use to relieve symptoms of menopause increases the likelihood in mice with breast cancer that the disease will spread.

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  2. Health & Medicine

    Keeping breathing steady and safe

    Scientists may have found a way to avoid the lowered breathing rate that comes from treatment with morphine or other opiate-based narcotics and anesthetics.

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  3. Astronomy

    Dusty times on Mars

    On July 1, a dust cloud emerged from Mars' Hellas Basin, and 3 days later it had become 1,800 kilometers wide, roughly one-fourth the Red Planet’s diameter.

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  4. Earth

    Greenland ice variation appears normal

    Changes in snowfall observed in parts of southern Greenland between 1978 and 1988 appear to be normal if gauged against the variations recorded in ice cores over the past 400 years.

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  5. Earth

    Cooking up a key chemical of life

    Researchers have simulated the conditions and ingredients found at hydrothermal vents to create pyruvic acid, an organic chemical vital for cellular metabolism.

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  6. Show me the data

    A debate has broken out over whether neuroscientists should share the voluminous data that they generate in their experiments.

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  7. Traumas trip up inner-city girls

    Inner-city teenage girls may often experience a severe stress reaction that makes it more difficult for them to succeed in school.

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  8. Astronomy

    A new receiver for alien broadcasts

    A $12.5 million grant will help build the world's largest telescope designed to search for radio broadcasts from alien civilizations.

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  9. Astronomy

    Taking a census of brown dwarfs

    Researchers have completed the most thorough census to date of brown dwarfs in stellar clusters and have confirmed earlier findings about these failed stars.

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  10. Down the Tubes: Amino acid proves key to plant reproduction

    An amino acid that human brain cells communicate with also has a role in plant sex.

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  11. Health & Medicine

    Metal’s Mayhem: Cadmium mimics estrogen’s effects, thwarts DNA repair

    Cadmium causes endocrine disruption by mimicking estrogen in rats and also thwarts routine DNA repair, causing mutations, two studies show.

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  12. Materials Science

    Tiny Labs: Polymers on silicon chip catch, release proteins

    In a step toward a new laboratory-on-a-chip technology, researchers have grown a dense polymer film on a silicon wafer that takes up and releases proteins on command.

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