HS-LS1-2

Develop and use a model to illustrate the hierarchical organization of interacting systems that provide specific functions within multicellular organisms.

  1. Health & Medicine

    Explainer: What is puberty?

    Puberty isn’t just a time for zits, breasts and deeper voices. It also spurs brain development that helps teens handle emotions and deal with stress.

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  2. Brain

    You don’t see as much color as you think

    It might seem like we live in a world full of color. But when scientists flip it into black and white, most people never notice the switch.

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  3. Animals

    Superblack fish can disappear in the deep sea’s darkness

    Some fish that live in the ocean’s depths are superblack due to a special layer of light-absorbing structures in their skin.

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  4. Health & Medicine

    Explainer: What are Antibodies?

    Antibodies are one of the major players in the immune system’s attack against germs. Learn what they are, what they do and how they keep us healthy.

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  5. Brain

    Explainer: How our eyes make sense of light

    It takes a lot for images before the eyes to be 'seen.' It starts by special cells sensing the light, then signals relaying those data to the brain.

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  6. Oceans

    Going bright may help corals recover from bleaching

    When some corals bleach, they turn neon colors. Flashy hues may be part of a response that helps these corals recover and reunite with their algae.

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  7. Chemistry

    This tube worm’s glowing slime may help sustain its own shine

    Snot oozed by a marine tube worm can glow for up to 3 full days. The secret of how this works might lead to long-lasting lights that glow on and on.

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  8. Health & Medicine

    Antibodies from former COVID-19 patients could become a medicine

    The experimental treatment uses antibodies from the blood plasma of COVID-19 survivors. It may prevent disease in other people or help treat the sick.

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  9. Animals

    Conservation is going to the dogs

    Scientists are now training dogs to help track rare, elusive — and sometimes invasive — plants and animals.

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  10. Brain

    Zapping the brain may make it work right again

    Sending electrical zaps to electrodes implanted deep in the brain can help people with Parkinson’s disease, depression and even obsessive-compulsive disorder.

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  11. Life

    Here’s how butterfly wings keep cool in the sun

    Butterfly wings sport structures that let living tissues release more heat than the rest of the wing.

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  12. Animals

    Ouch! Jellyfish snot can hurt people who never touch the animal

    A goo shed by at least one species of upside-down jellyfish contains stinging cells. They can cause pain even to creatures that never touch the jelly.

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