Vol. 171 No. #11
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More Stories from the March 17, 2007 issue

  1. Astronomy

    Dance of the dead

    Astronomers have found what appears to be the fastest-spinning stellar corpse known.

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  2. Earth

    Hibernation concentrates chemicals

    Some pollutants accumulate in grizzlies during the bears' hibernation.

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  3. Chemistry

    Scrubbing troubles

    Triclosan, an antibacterial agent found in many soaps, may increase a person's exposure to a potentially toxic chemical.

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  4. Health & Medicine

    Emerging bug pilfers DNA

    A virulent bacterium invading U.S. hospitals and the battlefields of the Middle East pilfers its genes from other bacteria.

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  5. Tech

    EPA council sets priorities

    The Environmental Protection Agency's Science Policy Council has outlined the agency's nanotechnology-research needs.

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  6. Earth

    Hey, it’s cooler near the sprinklers

    Extensive agricultural irrigation can significantly affect local climate and may be masking the effects of global warming in some areas.

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  7. Health & Medicine

    Brain Fix: Stem cells supply missing enzyme

    Brain stem cells implanted into sick mice restored a missing enzyme and extended life span by 70 percent.

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  8. Anthropology

    Ancient Slow Growth: Fossil teeth show roots of human development

    An extended period of childhood evolved in people at least 160,000 years ago.

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  9. Physics

    Warming Up to Criticality: Quantum change, one bubble at a time

    Physicists can now observe matter as it gradually turns into a Bose-Einstein condensate—the exotic state of matter that displays quantum behavior at macroscopic scales.

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  10. Astronomy

    First Family: Pluto-size body has siblings

    Astronomers have found the first family of objects in the Kuiper belt, a remote outpost of the solar system beyond the orbit of Neptune.

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  11. Animals

    It’s a Girl: Atlantic mystery squid undergoes scrutiny

    To scientists' surprise, a huge, deep-sea, gelatinous squid formerly reported only in the Pacific Ocean has turned up half a world away.

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  12. New Memory Manager: DNA silencer also controls memory formation

    A surprising finding links memory formation to a process of shutting down genes in growing embryos.

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  13. Humans

    The Next Generation: Intel Science Talent Search honors high school achievers

    A 17-year-old from Oklahoma City who built a homemade Raman spectra system took first place at this year's Intel Science Talent Search.

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  14. Agriculture

    Herbal Herbicides

    Scientists are tapping plants, and the self-defense chemicals they make, for new weed killers, many of which may find use in organic farming.

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  15. Computing

    Games Theory

    Online games can not only entertain but also provide valuable data for researchers tackling computer-vision and other tough computational problems.

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  16. Humans

    Letters from the March 17, 2007, issue of Science News

    Disputable thesis “Counterintuitive Toxicity: Increasingly, scientists are finding that they can’t predict a poison’s low-dose effects” (SN: 1/20/07, p. 40) took a wrong turn into Hormesis Swamp. The hormesis thesis has been thoroughly discredited by all major radiation organizations and professional societies, and its past conferences have been sponsored by tobacco companies and the U.S. […]

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