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Your search has returned 32 articles:
  • News

    Not-So-Clear Alternative: In its air-quality effects, ethanol fuel is similar to gasoline

    Switching the nation's vehicles from gasoline to mostly ethanol will not reduce air pollution, a new study finds. The work joins other evidence questioning the benefits of ethanol fuel.

    Mark Z. Jacobson, an atmospheric scientist at Stanford University, created a model that takes into account how the chemicals emitted in car exhaust transform through reactions in the atmosphere. He...

    05/01/2007 - 20:22 Earth & Environment
  • News

    More Than Bit Players: Snippets of RNA might sway pancreatic cancer

    Cancer of the pancreas is one of the most discouraging diagnoses that a person can receive. The cancer is difficult to detect, so many patients are diagnosed too late for surgical treatment. The majority die within a year of getting the bad news, and only 5 percent survive for 5 years.

    Researchers now find that small pieces of genetic material called microRNAs might provide a preview of...

    05/01/2007 - 20:08 Biomedicine
  • News

    Liquid Center: Mercury has a molten core, radar reveals

    Mercury is hot stuff. That's the conclusion of a new radar study demonstrating that the core of the solar system's innermost planet is at least partially molten. The finding settles a long-simmering debate about the least studied of the planets. It may also provide insight about how the solar system created its planets.

    With Mercury averaging just a third as far from the sun...

    05/01/2007 - 20:01 Planetary Science
  • News

    Automatic Networking: Brain systems charge up in unconscious monkeys

    Anesthetized monkeys may be dead to the world, but their brains remain surprisingly lively. Organized patterns of activity continually course through neural networks that during waking life control the animals' eye movements and other critical functions, a new brain-scan investigation finds.

    Unconscious monkeys also display a type of spontaneous brain activity that until now had been...

    05/01/2007 - 19:54
  • News

    Quantum Loophole: Some quirks of physics can be good for science

    Quantum theory notoriously sets limits on how precisely we can make measurements. But the quirks of the quantum realm can also be turned to advantage. Physicists have now demonstrated a way to almost double measurement precision when using photons to gauge distances.

    Like markings on a ruler, the orderly waves of laser light can be used to measure lengths. In an...

    05/01/2007 - 19:44 Physics