Vol. 169 No. #25

More Stories from the June 24, 2006 issue

  1. Earth

    Main source of airborne pollen varies by month

    A 15-year study conducted in the New York City area charts how air concentrations of different types of allergy-causing pollen vary throughout an average year.

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  2. Plants

    Herbal therapy for beleaguered lawns

    Mustard and other herbal remedies can thwart turf attacks by root-feeding roundworms.

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  3. Earth

    Something’s fishy about these hormones

    Synthetic steroids used to beef up cattle can impair reproduction in female fish and even give them macho physical traits.

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  4. Health & Medicine

    Coffee protects against alcoholic cirrhosis

    A sobering cup of coffee could provide protection against cirrhosis, a liver-scarring disease common in alcoholics.

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  5. Health & Medicine

    Glucosamine isn’t at fault

    The popular dietary supplement glucosamine doesn't cause insulin resistance, the precursor of type 2 diabetes.

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  6. Three gene variants boost diabetes risk

    Researchers have linked small variations in three genes to type 2 diabetes.

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  7. Health & Medicine

    New drugs reduce blood sugar

    Two experimental drugs can lower blood sugar significantly in people with type 2 diabetes.

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  8. Health & Medicine

    Antidepressant drugs show link to diabetes

    People taking antidepressant medication might be at increased risk of developing diabetes.

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  9. Astronomy

    Magnetic Thrust: Fields force matter into black holes

    New observations confirm that magnetic fields provide matter with the last push to plunge into a black hole.

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  10. Health & Medicine

    Proof of Protection: Condoms limit infection by cervical cancer virus

    Condom use reduces a woman's risk of being infected with human papillomavirus and of developing precancerous growths on the cervix.

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  11. Animals

    Fishy Reputations: Undersea watchers choose helpers that do good jobs

    Coral reef fish use smart-shopper techniques of looking for satisfied customers before choosing a small fish to provide cleaning services.

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  12. Ecosystems

    A Chronicle of Coasts: Study charts historical changes in seas, estuaries

    New research compares the long-term ecological impact of human activities in estuaries and coastal seas on three continents.

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  13. Older but Mellower: Aging brain shifts gears to emotional advantage

    The aging brain reorganizes in ways that foster emotional stability and a tendency to favor positive emotions over negative ones.

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  14. Earth

    Toxic Leftovers: Microbes convert flame retardant

    Bacteria can break down a common flame retardant into more-toxic forms.

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  15. Paleontology

    Sticky Subjects: Insights into ancient spider diet, kinship

    Remnants of a spider web embedded in ancient amber suggest that some spiders' diets haven't changed much in millions of years.

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  16. Nurture Takes the Spotlight

    What a person eats, what chemicals he or she is exposed to, and other features of a person's environment chemically modify chromosomes, thereby changing how genes are ultimately expressed.

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  17. Animals

    Naked and Not

    The Damaraland mole rat may be less famous than its naked cousin, but both have some of the oddest social structures found in a mammal.

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  18. Humans

    Letters from the June 24, 2006, issue of Science News

    Timely suggestions Clock time has long been out of step with the heavens (“To Leap or Not to Leap,” SN: 4/22/06, p. 248). Since the adoption of time zones in the 19th century, we have accepted disparities of as much as 30 minutes at the edges of the time zones (more in some cases since […]

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