MS-PS2-3

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  1. Agriculture

    Native Amazonians make rich soils — and ancient people may have too

    Modern Amazonians make nutrient-rich soil from ash, food scraps and burns. The soil strongly resembles ancient “dark earth” found in the region.

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  2. Tech

    Underwater cameras get a new power source — sound!

    Needing no batteries, a new digital camera can run almost continuously to offer new, deeper insights into the ocean world.

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  3. Earth

    Scientists Say: Pole

    A pole is either of two opposite ends of a molecule, magnet, battery, planet or other object.

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  4. Physics

    Scientists Say: Force

    When an object experiences a force, its change in motion — or acceleration — depends on its mass.

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  5. Tech

    You might someday ‘wallpaper’ your bedroom with this loudspeaker

    This thin, flexible and lightweight loudspeaker could reduce noise in loud spaces. It also might enable listeners to experience sound in new ways.

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  6. Plants

    Electric shocks act like vaccines to protect plants from viruses

    To protect crops against viruses in their home country of Taiwan, two teens invented a novel approach to fight blights.

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  7. Materials Science

    Analyze This: This material for 3-D printing is made by microbes

    Bacteria with tweaked genes pump out proteins that can be used in a 3-D printer. With microbes in the mix, the living ink can make drugs or suck up chemicals.

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  8. Physics

    Explainer: Understanding electricity

    Here’s what allows you to plug in and power up the devices in your life.

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  9. Chemistry

    New glue offers to turn any small walking robot into Spider-Man

    To climb walls, robot feet need to alternately stick and let go. A novel adhesive can do that. Its stickiness is controlled by electric fields.

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