HS-LS1-3

Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.

  1. Chemistry

    Gotcha! New test stalks diseases early

    Chemists screen blood for disease markers by adapting a common DNA test. The test can find disease earlier, when it also may be easier to treat.

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  2. Health & Medicine

    Cool Jobs: Researchers on the run

    Researchers are taking running to extremes, from Olympic lizards to treadmills in space. The goal is to learn how athletes of all kinds can stay healthier.

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  3. Health & Medicine

    Allergies linked to obesity and heart risks

    Children and teens with asthma, allergies or other autoimmune conditions tend to be overweight and show symptoms of heart-disease risks, a new study finds.

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  4. Tech

    New light on brain science

    A combination of physics, biology and engineering lets scientists use light to trigger actions by specific brain cells. Called optogenetics, this technology is shining new light on how the brain works.

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  5. 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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  6. Health & Medicine

    Scientists Say: Hormone

    This is a chemical that travels in the blood and acts as a signal. It can tell distant body parts what to do. When a chemical acts in this way, it has a special name.

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  7. Microbes

    Life’s ultra-slow lane is deep beneath the sea

    Biologists had suspected the deep seafloor would be little more than barren sediment. But they found a surprising amount of oxygen — and life.

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  8. Animals

    Hellbenders need help!

    Hellbenders already face threats such as habitat loss, pollution and disease. But climate change could make matters worse. And the problems facing hellbenders could spell trouble for more than just these giant amphibians.

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  9. 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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  10. Microbes

    Cold noses nurture colds

    The common cold infects the nose. Scientists long have known the virus grows better there, but not why. Now, a study finds the body’s defenses simply don’t work as well under the nose’s slightly cooler temperatures.

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  11. Computing

    Virtual wounds: Computers probe healing

    To better understand how the body heals wounds, scientists have begun creating computer programs that let virtual cells fight it out. These ‘computer games’ could lead to better medicines.

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  12. Health & Medicine

    Scientists say: Inflammation

    When cells are injured, they send out distress signals. The rescuing cells cause more blood to flow to the area, producing inflammation.

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