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Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.

  1. Health & Medicine

    These bubbles treat wounds

    New research shows bubble-powered drugs can travel upstream, against the flow of blood, to seal wounds shut.

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  2. Animals

    Hummingbird tongues may be tiny pumps

    Scientists had thought that hummingbird tongues work through capillary action. A new study, though, concludes they work like little pumps.

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  3. Health & Medicine

    Catching ZZZs may retrieve lost memories

    Forgetful? Maybe you’ve forgotten to get enough shuteye. A study in fruit flies suggests that a good sleep can boost their ability to remember things.

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  4. Brain

    Scientists Say: Blood-brain barrier

    Blood can contain nasty bacteria and other things you want to keep away from your delicate brain. The blood-brain barrier is up to the job.

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  5. Health & Medicine

    Peanuts for baby: A way to avoid peanut allergy?

    Making peanut products a baby food could head off life-threatening peanut allergies later, new data show.

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  6. Health & Medicine

    Vision-ary high tech

    New devices are being developed to improve, restore or preserve the vision of people with eye diseases, such as glaucoma and macular degeneration. One device is a telescopic contact lens than can be zoomed with a wink.

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  7. Animals

    Resilient hearts for deep-sea divers

    How do aquatic mammals have enough energy to hunt prey while steeply dropping their heart rate to stay underwater? A new study of dolphins and seals provides clues.

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  8. Agriculture

    Livestock: A need to save rare breeds

    New studies and ongoing work highlight why society should save rare livestock breeds — and the part that technology can play.

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  9. Environment

    Nano air pollutants strike a blow to the brain

    Most people think that air pollution poses the biggest risk to our lungs. In fact, pollution hits the brain too, sometimes by traveling a direct route — through our noses. These tiny pollutants can harm IQ and more.

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  10. Tech

    Fashioning inks to ‘print’ tissues

    3-D printing may one day create life-saving tissues and organs for transplants. But first researchers are learning how to tailor cell-filled “inks” for use in inkjet printers.

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  11. Health & Medicine

    Young blood: The elixir of youth?

    Old mice show improved memory when blood from young mice circulated through their brains, a new study finds. Other studies suggest one ingredient in that young blood might be all it takes to deliver benefits.

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  12. Science & Society

    Dissect a frog and keep your hands clean

    Dissecting frogs can be a fun and useful way to learn about anatomy. If you don’t have a frog on hand, here are three smartphone apps that allow you have your frog legs and dissect them, too.

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