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  • Letters to the Editor

    Letters from the December 3, 2005, issue of Science News

    Eye on energy

    "Cosmic Ray Font: Supernova remnants rev up ions" (SN: 10/1/05, p. 213) is unfortunately murky. It's confusing to state that accelerating charged particles to high speeds "therefore" produces cosmic rays. And what "charged particles"? Is the "energized" gas in fact "ionized"? "Energized" is too general a word. Finally, why are high-speed particles more easily compressed than...

    12/01/2005 - 10:59 Humans & Society
  • News

    Face Time: Bees can tell apart human portraits

    Honeybees will learn to zoom up to particular human faces in a version of a facial-recognition test used for people, researchers say.

    Previous studies of bee vision failed to show that the insects could distinguish such subtle patterns, says Adrian Dyer of Johannes Gutenberg University in Mainz, Germany. The new evidence suggests that face recognition doesn't require a big...

    11/30/2005 - 12:20 Animals
  • News

    Rare but Fatal Outcome: Four deaths may trace to abortion pill

    In the 5 years since mifepristone, the so-called abortion pill, was approved in the United States, doctors have reported the deaths of four healthy women shortly after they took the drug, according to a new report. All four women died of toxic shock syndrome, and a research team is proposing "a possible association" between mifepristone and this rare but fatal condition.

    The drug is...

    11/30/2005 - 11:55 Biomedicine
  • News

    Waves of Grain: New data lift old model of agriculture's origins

    A new analysis of the locations and ages of ancient farming sites reinforces the controversial idea that the groups that started raising crops in the Middle East gradually grew in number and colonized much of Europe, replacing many native hunter-gatherers in the process.

    Hunter-gatherers in some European locales may have adopted farming rather than surrender their home territories to...

    11/30/2005 - 11:06 Anthropology
  • News

    Network Inoculation: Antivirus shield would outrace cyber infections

    The best way to stop an epidemic might be to start one. That's the gist of a new strategy against computer viruses that was just unveiled by Israeli researchers. In their theoretical approach, when a computer network detects a new virus, it launches an internal counter-epidemic of self-propagating, protective messages. Upon receiving such a message, an uncontaminated computer immunizes itself...

    11/30/2005 - 09:55 Computing