Vol. 159 No. #21
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More Stories from the May 26, 2001 issue

  1. Soy estrogen laces paper-mill wastes

    Paper-mill effluent contains an estrogen-mimicking pollutant at concentrations that may adversely affect reproduction in fish.

  2. Caterpillars die rather than switch

    A newly identified compound in tomatoes and other plants of the nightshade family turns hornworms into addicts that often starve rather than eat another food.

  3. Health & Medicine

    New drug takes on intestinal cancer

    Imatinib mesylate, already approved by the FDA for treating people with a form of leukemia, blocks the activity of certain enzymes that cause gastrointestinal stromal cells to replicate uncontrollably.

  4. Health & Medicine

    Gender bias: Stroke after heart surgery

    Women are more likely than men to suffer strokes after heart surgery.

  5. Materials Science

    Future brightens for carbon nanotubes

    Researchers have made a lightbulb that depends on carbon nanotubes for its glow.

  6. Materials Science

    Nanotubes form dense transistor array

    Researchers have made an array of transistors out of carbon nanotubes.

  7. Paleontology

    Early Mammal’s Jaw Lost Its Groove

    A tiny fossil skull found in 195-million-year-old Chinese sediments provides evidence that crucial features of mammal anatomy evolved more than 45 million years earlier than previously thought.

  8. Look on the bright side and survive longer

    People who, as young adults, describe their lives using a variety of terms for positive emotions live substantially longer than those who express little positive emotion, according to a long-term study of Catholic nuns.

  9. Health & Medicine

    Antibiotic resistance is coming to dinner

    Foods tainted with bacteria that antibiotics don't kill are a recipe for more serious—even lethal—infections.

  10. Chemistry

    Designer surface proves deadly to bacteria

    Researchers have made a surface coating that kills bacteria on contact in a novel way.

  11. Health & Medicine

    Poliovirus slaughters brain tumors in mice

    Scientists have altered a live polio virus, inducing it to target and kill brain tumor cells without causing polio.

  12. Slave-making ants get rough in New York

    The whole ant slave-making business turns more violent in New York than in West Virginia, even though it features the same species.

  13. Health & Medicine

    Genetic flaw found in painful gut disease

    Scientists have discovered a genetic mutation that occurs in people with Crohn's disease, a digestive disorder that attacks the intestines.

  14. Physics

    Electrons trip on tiny semiconductor steps

    A first glimpse of how a semiconductor's surface alters electrons' magnetic fields, or spins, suggests that tiny steps in the surfaces are tripping up efforts to create so-called spintronics circuits from semiconductors.

  15. Astronomy

    Captured on Camera: Are They Planets?

    Studying several groups of nearby, newborn stars–many of which weren't known until a few years ago–researchers may soon obtain the first image of a bona fide planet orbiting a star other than our sun.

  16. A Fly Called Iyaiyai

    All that Latin has its light side.