Vol. 157 No. #23

More Stories from the June 3, 2000 issue

  1. Earth

    Future Looks Cloudy for Arctic Ozone

    Clouds that drive ozone loss in the Antarctic turned up in force during the most recent Arctic winter.

    By
  2. Physics

    Quantum quirks quicken thorny searches

    A researcher has come up with a quantum algorithm for identifying one or more items in a large, unsorted database when complete information about the search target is unavailable.

    By
  3. Astronomy

    New sky map: Look, Ma, no Milky Way!

    Using a radio telescope to record emissions from hydrogen gas, astronomers have penetrated the murk of the Milky Way to map the entire southern sky.

    By
  4. Gene therapy grows bone in mice and rats

    A new gene therapy tested in rodents regrows bone by transforming skin and gum cells into bone-making cells or into cells that mass-produce a molecule called bone morphogenetic protein-7, which induces bone growth.

    By
  5. Viruses that slay bacteria draw new interest

    Bacteriophages, viruses that kill bacteria, may be able to cure seafood poisoning, decontaminate poultry, and tackle anthrax.

    By
  6. Earth

    Dioxin cuts the chance of fathering a boy

    More girls than boys are fathered by men who sustained a relatively high environmental exposure to dioxin from a 1976 factory explosion in Italy.

    By
  7. Physics

    Spectrum deftly takes visible light’s pulse

    A rainbow path to more precise measurements of visible-light frequencies may become an express lane to unprecedented accuracy in everyday measurements for all the sciences.

    By
  8. Religious commitment linked to longer life

    A statistical analysis of 42 studies revealed that people who report heavy involvement in religious activities tend to have better physical health and live longer than those who don't.

    By
  9. Astronomy

    A supernova’s shocking development

    Astronomers have for the first time recorded the full force of the shock wave hurled from supernova 1987A, the brightest stellar explosion witnessed from Earth since the invention of the modern telescope.

    By
  10. Astronomy

    More evidence of a flat universe

    Another balloon-borne experiment recording relic radiation from the Big Bang has found evidence that the universe is flat.

    By
  11. RNA and DNA help cells switch class

    Immune cells may tailor their genetic blueprint for antibodies through unusual RNA-DNA structures.

    By
  12. Molecule sparks origin-of-life debate

    The first genetic material may have been a molecule called peptide nucleic acid, or PNA.

    By
  13. Pen-shaped device purifies water

    A battery-powered instrument the size and shape of a pen can quickly disinfect contaminated drinking water.

    By
  14. Bacteria give carpet a nasty smell

    A compound produced by bacteria may be responsible for the "cat urine" smell of some new carpeting.

    By
  15. Chemistry

    Protein’s structure lights the way

    Forty years after the discovery of aequorin in a jellyfish, the structure of this calcium-tracking, glowing protein is resolved.

    By
  16. Chemistry

    Clearing the air on dirty art

    Air-pollution damage to artworks may accumulate more stealthily than conservationists thought, suggesting that art exhibitors need to step up protection against such damage.

    By
  17. Code Breakers

    Scientists are altering bacteria in a most fundamental way.

    By
  18. Health & Medicine

    Endgame for Epilepsy?

    Researchers look toward a cure.

    By