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We summarize the week's scientific breakthroughs every Thursday.

  1. Tech

    Tiny rockets may advance minisatellites

    A new type of miniaturized rocket may bring microspacecraft one step closer to reality.

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  2. Tech

    Paint-on displays get closer to reality

    By smearing on a coating and hardening it with light, researchers have created a new kind of electronic display.

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  3. Tech

    Deep Vision

    Increasingly available virtual-reality gear gives scientists, engineers, and planetarium visitors new perspectives.

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  4. Tech

    Bugs on Mars

    Undaunted by the hurdles on flight posed by thin air and a lack of oxygen, aerospace engineers are devising extraordinary flying machines resembling giant insects and windmills to make the exploration of Mars more rapid and effective.

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  5. Tech

    Live Tour: Joystick journeys reveal tumor interiors

    A new holographic technique may someday enable doctors to skip certain biopsies and choose instead to take video excursions inside suspicious growths in skin or internal body linings.

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  6. Tech

    Cold Lighting

    Solid-state light sources, such as light-emitting diodes, promise greater energy efficiency than do incandescent lamps. The Sandia National Laboratories has launched a Web site that offers articles, references, and other information on semiconductor-based lighting and its use for illuminating homes, offices, and public spaces. Go to: http://lighting.sandia.gov/

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  7. Tech

    Sowing neat rows of seeds on silicon

    A new way to introduce foreign atoms into silicon with atomic-scale precision may help chip manufacturers over a looming hurdle.

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  8. Tech

    Taming High-Tech Particles

    Researchers are beginning to study whether nanomaterials could have unintended negative consequences in the human body or the environment.

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  9. Computing

    Finding networks within networks

    A new mathematical procedure, or algorithm, picks out those members within a larger network—for instance, related sites on the World Wide Web—that have especially close ties.

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  10. Tech

    Littlest catalysts get a lot of support

    Tiny metal clusters used as catalysts are getting so small that presumably inert carrier materials that host them are also getting involved in the reactions.

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  11. Tech

    Beam Team: Unusual laser emits a band of light

    A novel laser on a microchip emits a band of light rather than the single, pure color usually expected from a laser.

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  12. Tech

    Itsy chain turns bitsy gears

    A tiny chain with links the size of biological cells offers a new way to deliver power to micromachines.

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