Vol. 160 No. #16
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More Stories from the October 20, 2001 issue

  1. Ecosystems

    Another World Hides inside Coral Reefs

    The first systematic survey of crevices inside Red Sea reefs reveals abundant filter feeders that may capture significant nutrients for the reef.

  2. Chemistry

    Nobel recognizes three for handy chemistry

    The 2001 Nobel Prize in Chemistry honors research that led to new chemicals, materials, and drugs, including widely used heart medicines.

  3. Paleontology

    Lemurs reveal clues to ancient Asian roots

    A diminutive lemur species inhabited what is now central Pakistan about 30 million years ago, a new fossil find suggests.

  4. Earth

    Lowland tree loss threatens cloud forests

    Changes in regional climate brought about by large-scale deforestation in the eastern lowlands of Central America are affecting weather in the mountains downwind, imperiling ecosystems there.

  5. Health & Medicine

    Retail meats host drug-resistant bacteria

    Three studies appear to tie livestock growth promoters to risk of serious human disease.

  6. Health & Medicine

    AMA: Drugs are for anthrax, not fear

    Doctors should not use antibiotics prophylactically against anthrax unless there is good reason to believe the individual had encountered the germs directly, the American Medical Association advises.

  7. Health & Medicine

    Hormone wards off immune cells in womb

    A hormone known for its involvement in the brain's response to stress also plays a key role in shielding the developing embryo from its mother's immune system.

  8. Health & Medicine

    Pregnancy spurs a tumor suppressor

    Pregnancy hormones may prime breast cells to maintain a supply of p53, a cancer suppressor protein, thus accounting for why women who have undergone pregnancy generally have a lower breast cancer risk than do others.

  9. Paleontology

    Fossils found under tons of Kitty Litter

    Excavations at North America's largest Kitter Litter mine have yielded fossils of ancient aquatic reptiles, as well as evidence of a tsunami generated by the extraterrestrial impact that killed off the dinosaurs about 65 million years ago.

  10. Paleontology

    How did Triceratops grow its horns?

    Newly discovered fossil skulls of juvenile Triceratops may help reveal how the dinosaurs grew their three trademark horns.

  11. Paleontology

    CT scan unscrambles rare, ancient egg

    A tangled heap of bones and bone fragments in the bottom of an unhatched elephant bird egg may soon be reassembled into a model of the long-dead embryo, thanks to high technology—and scientists won't even have to crack open the egg to do it.

  12. Paleontology

    Even flossing wouldn’t have helped

    Small particles trapped in minuscule cracks or pits in the teeth of plant-eating dinosaurs could give scientists a way to identify the types of greenery the ancient herbivores were munching.

  13. Chemistry

    Molecules, like Tinkertoys, link up

    Researchers have tailored molecules so that they self-assemble into predictable shapes on a gold surface.

  14. Chemistry

    Milk protein does a membrane good

    Chemical engineers have created a new type of durable membrane from whey protein, a natural component of milk.

  15. Rare sheep cloned from dead donor

    An international team used cells from recently dead ewes of the rare mouflon sheep to clone a lamb.

  16. Ant invaders strand seeds without rides

    Invading Argentine ants may reshape the plant composition of the South African fynbos ecosystem because the newcomers don't disperse seeds.

  17. Dolly Was Lucky

    Scientists studying the data on animal cloning argue that cloning a person would be unsafe.

  18. Hair Today, Gone Tomorrow?

    Some scientists suggest that a better understanding of hair biology might not only lead to new treatments for people with too little (or too much) hair but also shed light on cancer, the growth and development of bodily organs, and other matters.