Vol. 157 No. #19
Archive Issues Modal Example

More Stories from the May 6, 2000 issue

  1. Health & Medicine

    Drug Eases Bone Cancer Pain in Mice

    Pain caused by bone cancer in mice can be alleviated somewhat by osteoprotegerin, a drug being tested for osteoporosis, suggesting a possible new treatment for people with this cancer.

  2. Physics

    Intergalactic magnetism runs deep and wide

    Mounting evidence that magnetic fields of surprising strength permeate intergalactic space raises questions about how the fields form and what effects they have.

  3. Paleontology

    Africa’s east coast netted ancient humans

    Excavations of an exposed reef on Africa's Red Sea coast indicate that humans lived there 125,000 years ago, pushing back the date for the earliest seaside settlement by at least 10,000 years.

  4. Leggy beetles show how insects lost limbs

    Inactivating two genes in red flour beetles causes grubs to grow lots of legs—and provides clues to the puzzle of the evolution of the six-legged body plan.

  5. Astronomy

    X-ray satellite goes the distance

    Using the sharp X-ray eye of an orbiting observatory, astronomers have employed a novel method to measure distance within the Milky Way.

  6. Plants

    New gene-altering strategy tested on corn

    Scientists have created herbicide-resistant corn with a new kind of genetic engineering that involves subtly altering one of the plant's own genes rather than adding a new gene.

  7. Tech

    Civilians get better GPS

    President Clinton directed the Defense Department to stop degrading signals from 24 Global Positioning System satellites, allowing civilians to receive the same location-pinpointing accuracy long available to the U.S. military.

  8. Ah, my pretty, you’re…#&! a beetle pile!

    Hundreds of tiny, young blister beetles cluster into lumps resembling female bees and hitchhike on the male bees that they seduce.

  9. Genes, genes, and more genes

    Scientists have almost finished sequencing the genes of rice and of a man.

  10. Disabled genes dull sense of smell

    Mutated genes may explain why humans have a poor sense of smell.

  11. Health & Medicine

    Berry promising anticancer prospects

    Cranberry products can retard the growth and spread of breast cancer in rodents.

  12. Health & Medicine

    A different GI link to colon cancers

    Diets rich in sweets and other quickly digested carbohydrates appear to increase an individual's risk of developing colon cancer.

  13. Math

    Spinning to a rolling stop

    Air viscosity makes the rolling speed of a spinning, tipping coin go up as its energy goes down until the coin suddenly stops.

  14. Math

    Traffic woes of the single driver

    At moderate traffic volumes, a single car moving at randomly fluctuating speeds can cause traffic jams in its wake.

  15. Math

    Whirling to a chaotic finale

    A black hole paired with another body can succumb to chaos when they orbit each other, making it more difficult to detect gravitational waves produced by such objects.

  16. Physics

    Groovy ’70s sound keeps X rays tight

    Cast aside as a way to reproduce music, LP phonograph records reveal another, unsuspected talent that scientists plan to exploit-focusing X rays.

  17. Physics

    Magnetic snap gives ions extra pop

    Magnetic fields pump heat into ions when field lines of opposite orientation snap and reconnect.

  18. Math

    Changes of Mathematical State

    Untangling a web of conflicting demands can be tough on computers.

  19. Physics

    The Physics of Fizz

    Toasting a burst of discovery about bubbles in champagne and beer.