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Your search has returned 34 articles:
  • News

    Keeping Cells under Control: Enzyme suppression inhibits cancer spread

    Shutting down an enzyme can slow the spread of cancer in mice, scientists in Israel report. The finding suggests that further study of this enzyme, called heparanase, might lead to a treatment for cancer patients.

    Normally, heparanase facilitates cell migration in the body. This enables immune cells, for example, to travel to sites of infection. To provide this service, heparanase...

    08/25/2004 - 12:11 Biomedicine
  • News

    There's a Catch: Recreation takes toll on marine fish

    Sportfishing isn't just a tiny, harmless nibble on saltwater-fish populations, according to a new analysis of federal data.

    For species flagged for special concern in U.S. waters, sportfishing accounts for 23 percent of the harvest, says Felicia Coleman of Florida State University in Tallahassee. The percentage is even higher for certain regions. In the Gulf of Mexico,...

    08/25/2004 - 11:47 Earth & Environment
  • News

    North and South: Equal melting from each hemisphere raised ice age sea levels

    The gargantuan volumes of meltwater that boosted sea levels during the most recent round of ice ages derived equally from ice sheets in the Northern and Southern Hemispheres, according to new simulations of ocean currents.

    Between 65,000 and 35,000 years ago, the planet's climate was much colder and more variable than it is now. For example, global average temperatures warmed...

    08/25/2004 - 11:32 Earth
  • News

    Ringing Out Despair: Phone therapy gets call as depression buster

    It may be time for mental-health workers to pick up a new depression-fighting tool—the telephone. People taking antidepressant drugs for a bout of depression do particularly well, at least over a 6-month period, if they also take part in a program that includes telephone psychotherapy, a new study finds.

    Evidence of telephone therapy's mood-enhancing effect raises the prospect of...

    08/25/2004 - 11:21
  • News

    Super Portrait: X-ray telescope eyes supernova remnant

    When light from a massive star that exploded in the constellation Cassiopeia reached Earth some 340 years ago, few if any sky watchers recorded the event. But over the past several decades, the glowing remains of that explosion—a vast bubble of hot gas and dust called Cassiopeia A—has become one of the most studied supernova remnants in the heavens.

    Trained on Cassiopeia A...

    08/25/2004 - 11:02 Astronomy