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  1. Healing secret lies in blood

    An unknown factor in blood may be the key to why young people and animals heal much faster than old ones do.

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  2. 19521

    Your article appears to suggest that healing of old people could be promoted by young people’s blood. Perhaps there is something to the Dracula story after all. Young people give blood for money. Anything known about the effect of transfusions on old people? Bill HawkinsMinneapolis, Minn. The mice in this experiment exchanged far more blood […]

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  3. Earth

    Straight Flush

    Scientists are evaluating the results of the flood they unleashed in the Grand Canyon last November, hoping that it will restore sandbars and beaches along the Colorado River just downstream of Arizona's Glen Canyon Dam.

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  4. Math

    Super Bowl Crashes

    Should you stay off the road immediately after the Super Bowl telecast is over?

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  5. Humans

    From the February 23, 1935, issue

    A new type of "atom" gun, solar X rays, and crushing mineral ore.

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  6. Physics

    Particle Physics Phun

    An array of games, such as Particle Pinball and Race for Energy, challenge visitors at a Web site hosted by the high-energy physics center known as the Fermi National Accelerator Laboratory. Aimed at kids, the “Fermilabyrinth” pages introduce players to a zoo of elementary particles while it exercises pattern-recognition skills that scientists use to spot […]

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  7. Ecosystems

    Return of the Wetlands? Restoration possible for some Iraqi marshes

    Field studies conducted in Iraq last year suggest that some of the region's ecologically devastated marshes could be returned to health.

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  8. Health & Medicine

    To Stanch the Flow: Hemophilia drug curbs brain hemorrhage

    A blood-clotting drug helps some people recover from a bleeding stroke.

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  9. Physics

    Electronic Soup: Molecules in acid broth act as circuit parts

    An electronically promising molecule functions well in acid as a tiny amplifier, underscoring the importance of controlling molecules' electrochemical environments to achieve predictable performance.

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  10. Humans

    Letters from the February 26, 2005, issue of Science News

    Let’s move it, people When I read of the Hubble Space Telescope–repair controversy (“People, Not Robots: Panel favors shuttle mission to Hubble,” SN: 12/18&25/04, p. 388; “Lean Times: Proposed budget keeps science spending slim,” SN: 2/12/05, p. 102), this question comes to mind: Why can’t an unmanned, powered vehicle latch on to Hubble and fly […]

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  11. Shrinking at Sea: Harvesting drives evolution toward smaller fishes

    In response to fishing, numerous fish species have evolved to be smaller and to grow more slowly, creating populations of fish that are poor at reproducing and inefficient at bulking up.

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  12. Astronomy

    Big Flash: Record-breaking explosion in outer space

    The brightest flash of light ever recorded from beyond the solar system could help account for a puzzling group of extremely short-lived gamma-ray bursts from distant galaxies.

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