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Your search has returned 19 articles:
  • News

    Milk seems to guard against breast cancer

    Milk isn't just a boon to a woman's bones. A new study finds that it might also protect her breasts. Norwegian scientists have linked high milk consumption to low incidence of breast cancer.

    A decade ago, researchers launched the still ongoing Norwegian Women and Cancer (NOWAC) study. They recruited 100,000 participants, all 35 or older, from throughout the nation. Though the thrust of...

    08/29/2001 - 15:55 Nutrition
  • News

    Quantum bell rings to electron beat

    Before the invention of the transistor, telephone switching stations clicked with the sound of small metal arms gating the flow of electricity. A new invention revives mechanical systems, but on a far smaller scale.

    German researchers have come up with a device that takes control of electricity by shuttling electrons across a gap with metronome-like regularity. The mechanism has...

    08/29/2001 - 15:19 Technology
  • News

    Crystal listens for telltale sounds of virus

    After successfully testing a device that can hear the movement of a single virus from a drop of fluid, researchers envision a handheld instrument that could detect viral illnesses such as foot-and-mouth disease and Ebola.

    The investigators suggest that their acoustic detector could be quicker and more economical than current assays used to identify viruses in blood, saliva, and...

    08/29/2001 - 14:48 Technology
  • News

    Hindering glutamate slows rat brain cancer

    Drugs that thwart the effect of a chemical secreted by certain cancerous brain cells could slow the growth of deadly brain tumors, a new study suggests.

    The chemical, an amino acid called glutamate, normally acts as a neurotransmitter that brain cells use to signal each other. To serve this purpose, glutamate must move cleanly between cells. However, excess glutamate spilled into the...

    08/29/2001 - 14:21 Biomedicine
  • News

    It's a snake! No, a fish. An octopus?

    Whether the so-called mimic octopus could impersonate Madonna or President Bush remains unclear, but researchers say the long-armed wonder does a great sea snake and lionfish.

    The octopus, too recent a discovery to have a scientific name, prowls the silty stretches where rivers spill into the sea in Indonesia, explains Mark D. Norman of Museum Victoria in Melbourne, Australia....

    08/29/2001 - 09:38 Animals
  • News

    Human Brains May Take Unique Turn

    Two neuroscientists have tapped into what may represent a fundamental difference in brain development between people and other mammals.

    If the findings hold up, they'll offer insight into how humans evolved an enlarged frontal cortex capable of supporting symbolic thought and language use, conclude Kresimir Letinic and Pasko Rakic of Yale University School of Medicine.

    Researchers...

    08/29/2001 - 09:23
  • News

    Computer paints a charged bioportrait

    By employing a novel computational strategy, researchers have mapped the electrical landscape of biological molecules made up of more than 1 million atoms. Previous methods were typically limited to fewer than 50,000 atoms.

    Electrostatic properties play an important role in the stability and dynamics of proteins, nucleic acids, and other biomolecules. With the new approach,...

    08/28/2001 - 16:36 Computing
  • Feature

    Pi à la Mode

    Memorizing the digits of pi–the ratio of a circle's circumference to its diameter–presents a hefty challenge to anyone undertaking that quixotic exercise. Starting with 3.14159265, the decimal digits of pi run on forever, and there is no discernible pattern to ease the task.

    The apparent randomness of pi's digits has long intrigued mathematician David H. Bailey of the...

    08/28/2001 - 15:29 Numbers
  • News

    New fossil sheds light on dinosaurs' diet

    Vestiges of soft tissue preserved in a 70-million-year-old Mongolian fossil suggest that some dinosaurs strained small bits of food from the water and mud of streams and ponds, just as modern ducks, geese, and flamingos do.

    The remnants of a comblike plate appear inside the beak on the fossil's upper and lower jaw. Individual strands of material, about 5.6 millimeters long, sit...

    08/28/2001 - 11:56 Paleontology
  • Feature

    The Seeing Tongue

    Blind since birth, Marie-Laure Martin had always thought that candle flames were big balls of fire. The 39-year-old woman couldn't see the flames themselves, but she could sense the candle's aura of heat.

    Last October, she saw a candle flame for the first time. She was stunned by how small it actually was and how it danced. There's a second marvel here: She saw it...

    08/28/2001 - 11:45 Technology