Vol. 174 No. #4
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More Stories from the August 16, 2008 issue

  1. Health & Medicine

    Asthma oddity

    Helicobacter pylori, a common microbe that colonizes the stomach, might protect against asthma.

  2. Physics

    Seeing the smallest atom

    Electron microscopes can now image single atoms of hydrogen.

  3. Health & Medicine

    Against the grains

    People on either a low-carbohydrate or Mediterranean diet fared better over two years than those on a low-fat diet.

  4. Life

    Magnetic sense linked to molecule

    Fruit fly experiments shed light on animals’ use of Earth’s magnetic field for orientation and navigation.

  5. Health & Medicine

    Viagra and women

    Viagra eases some sexual problems for women taking antidepressants

  6. Chemistry

    Quantum physics makes water different

    The length of bonds connecting water molecules could demonstrate quantum effects and help explain some of water’s weirdness.

  7. Plants

    Parasitic plant gets more than a meal

    The parasitic vine known as dodder really sucks. It pierces the tissue of other plants — some of which are important crops — extracting water and nutrients needed for its own growth. But it also consumes molecules that scientists could manipulate to bring on the parasite’s demise.

  8. Health & Medicine

    Statin snag

    A gene variant explains why some people get muscle pains from cholesterol-lowering drugs called statins.

  9. Plants

    Fugitives spread bumblebee diseases

    Pathogens hitchhike on commercial bees that escape from greenhouses. These escapees bring disease to wild bumblebees.

  10. Health & Medicine

    Protein links metabolism and circadian rhythms

    Scientists have known for ages that metabolism is tied to the body’s daily rhythms. Two new studies suggest how.

  11. Humans

    Toddlers triumphant

    In new studies, toddlers display dramatic advances in object recognition that may underlie verbal and symbolic achievements.

  12. Psychology

    Core calculations

    Number words may serve as mental tools for expanding on basic, nonverbal numerical knowledge rather than as determinants of such knowledge.

  13. Life

    How the snake got its fangs

    A study of snake embryos suggests that fangs evolved once, then moved around in the head to give today’s snakes a variety of bites.

  14. Health & Medicine

    Nanomagnets tackle cancer

    Under the influence of an external magnetic field, tiny magnets act as highly localized space heaters, warming to temperatures that kill adjacent cancer cells.

  15. Animals

    Built for Speed

    Animals would prove fierce competitors at the Olympics — if only they would stay in their lanes.

  16. Health & Medicine

    Neuron Killers

    Misfolded, clumping proteins evade conviction, but they remain prime suspects in neurodegenerative diseases.

  17. Math

    Welcome to the Quantum Internet

    Quantum encryption is here, but the laws of physics can do much more than protect privacy.