Vol. 157 No. #25
Archive Issues Modal Example

More Stories from the June 17, 2000 issue

  1. Earth

    Excreted Drugs: Something Looks Fishy

    Drugs that the body can't fully use enter waste water, where they may affect aquatic life—or wind up in tap water.

  2. Tech

    Satellite links may don quantum cloaks

    A theoretically foolproof scheme to shield secrets via the laws of quantum mechanics demonstrates its readiness to take on Earth-satellite communications.

  3. Health & Medicine

    Common antibiotic may cure river blindness

    Tests in cows suggest that tetracycline might kill the tiny worm that spreads river blindness, a disease that infects about 18 million people.

  4. Archaeology

    Neandertals’ diet put meat in their bones

    Chemical analyses of Neandertals' bones portray these ancient Europeans as skillful hunters and avid meat eaters, countering a theory that they mainly scavenged scraps of meat from abandoned carcasses.

  5. Astronomy

    Black holes and galaxies may grow up together

    Astronomers have new and, for the first time, quantitative evidence that bigger black holes reside at the centers of bigger galaxies.

  6. Mice have a sharp nose for pheromones

    Mice can detect pheromones with great sensitivity and in a way that's distinct from that of the main olfactory system.

  7. Animals

    Single singing male toad seeks same

    Male spadefoot toads of the Spea multiplicata species evaluate male competitors by the same criterion females use.

  8. Physics

    Stretched matter goes to unusual extremes

    Researchers have discovered that several unusual forms of matter with extremely high or low densities can expand laterally in one direction and contract in another when extended.

  9. Old lemming puzzle gets new answer

    A novel analysis suggests food supply variations as the answer to the decades-old puzzle of what makes lemming populations boom and bust.

  10. Biodiversity may lessen Lyme disease

    A survey of Lyme disease rates suggests that a greater diversity of small mammals and lizards may help keep the rates down.

  11. Health & Medicine

    Did colonization spread ulcers?

    A comparison of strains of Helicobacter pylori, the bacterium that causes ulcers, suggests that colonists brought it to the New World.

  12. Health & Medicine

    New tests may catch bicyclers on dope

    Two new tests, on blood and urine, detect the presence of synthetic erythropoietin, a drug that boosts red blood cell counts and enhances stamina.

  13. Math

    Pursuing punctured polyhedra

    A mathematician has proved that it's possible to construct a mathematical shape made up of flat faces and straight edges in which every face has a "hole" where the vertex of one constituent polyhedron pokes into the face of another.

  14. Math

    Super Bowls and stock markets

    The predictive power of the Super Bowl "theory," which involves an apparent correlation between stock market performance and the results of the National Football League championship game, has declined precipitously in recent years.

  15. Physics

    Atom microchips get off the ground

    Becoming smaller and more versatile, microchips using atoms instead of electrons promise both to improve atomic physics experiments and to pave the way for new technologies such as quantum computers.

  16. Physics

    Light chips find a place to take root

    The fabrication of an artificial, inside-out opal of silicon promises to make all-optical microchips possible

  17. Physics

    Connect the Dots

    Transforming sunlight into electricity by means of quantum dust.

  18. Math

    The Power of Partitions

    Writing a whole number as the sum of smaller numbers springs a mathematical surprise.