Vol. 173 No. #11
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More Stories from the March 15, 2008 issue

  1. Physics

    Too speedy for gravity?

    A new analysis suggests that five different spacecraft gained more speed as they flew past Earth than can be accounted for by Einstein's theory of gravitation.

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  2. Altruistic twist in market economies

    Democratic societies with market economies promote a moral ethic of cooperating with strangers who demand mutual sacrifices in joint ventures.

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  3. Materials Science

    Cellulose that stiffens and softens

    A material inspired by sea cucumbers morphs from rigid to soft.

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  4. Pick a photo, any photo

    An fMRI scan of the brain can tell what photograph a subject is looking at.

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  5. Health & Medicine

    Exercises counteract lazy eye

    Amblyopia, or lazy eye, can be reversed in adults with visual task exercises.

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  6. Health & Medicine

    New technique brings Parkinson’s treatment closer

    An efficient technique to make dopamine-producing nerve cells from human embryonic stem cells could mark a step toward devising therapies for Parkinson's disease.

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  7. Plants

    City life changes style of weed seeds

    City living pushes for rapid evolution in the seed strategy of a little yellow flower along French sidewalks.

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  8. Astronomy

    State of the Universe: Microwave glow powers cosmic insights

    Radiation left over from the Big Bang offers researchers unprecedented cosmic understanding.

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  9. Health & Medicine

    Roll Up Your Sleeve: Hypertension vaccine passes early test

    An angiotensin vaccine stifles high blood pressure in an early test in people.

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  10. Earth

    Weather maker

    The North Atlantic's Gulf Stream affects the overlying atmosphere more strongly than previously suspected.

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  11. Common Age: Worms, yeast, and people share genes for aging

    Roundworms, yeast, and humans share more than a dozen genes linked to aging.

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  12. Animals

    Gator Aids: Gators squish lungs around to dive and roll

    Alligator researchers say they have discovered a new role for lungs as maneuvering aids under water.

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  13. Anthropology

    Small Wonders: Tiny islanders elevate ‘hobbit’ debate

    The discovery in two South Pacific caves of bones from an extinct group of half-size humans has fueled the already heated scientific debate over the evolutionary identity of so-called hobbit remains from Indonesia.

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  14. Health & Medicine

    Dual Role: Painkiller may affect brain

    A class of drugs being developed to block pain could obstruct memory formation as well.

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  15. Humans

    Tomorrow’s Stars: Intel Science Talent Search honors high achievers

    The Intel Science Talent Search announced its winners at a gala dinner honoring the competition's 40 finalists.

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  16. Health & Medicine

    Beyond Blood

    Bloodless MRI seeks a more direct window into the working brain than conventional techniques.

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  17. The Next Ocean

    Increasing carbon dioxide in the air is changing the pH of the ocean, which could mean very different communities of sea creatures.

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  18. Humans

    Letters from the March 15, 2008, issue of Science News

    Alpha bird(s) There is a detail not explicit in the article “Birds network too” (SN: 2/23/08, p. 125) that fits the computer network analogy. By its flight path, each bird adds its personal input and helps guide the course of the flock. Don BurnapRapid City, S.D. Andrea Cavagna, a physicist at Italy’s National Research Council, […]

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