HS-LS1-3

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

More Stories in HS-LS1-3

  1. Space

    Space travel may harm health by damaging cells’ powerhouses

    Biochemical changes after going to space suggest that harm to cells’ energy-producing structures, called mitochondria, could explain astronauts’ health issues.

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  2. Animals

    Touching allows octopuses to pre-taste their food

    Special sensory cells in their arms’ suckers sense chemicals. Those cells allow them to taste the difference between food and poison.

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  3. Health & Medicine

    Strongest bones come from Goldilocks recipe of exercise and rest

    Building strong bones for life depends on adolescents staying active and getting enough sleep. Sometimes a lot of sleep, like 11 hours!

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  4. Animals

    Scientists Say: Medullary bone

    Medullary bone is a layer that forms inside bird and dinosaur bones. It’s a source of the calcium in eggshells.

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  5. Health & Medicine

    Third major vaccine shows great promise against COVID-19

    This vaccine, which may be easier to get to the public, appears to be 90 percent effective at halting disease and maybe spread of the new coronavirus.

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  6. Health & Medicine

    Moderna vaccine for COVID-19 appears nearly 95 percent effective

    A second coronavirus vaccine appears super effective in preventing people from being sickened by COVID-19.

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  7. Health & Medicine

    New Pfizer vaccine appears 90 percent effective against COVID-19

    Preliminary finds show one of the new coronavirus vaccines appears 90 percent effective at reducing symptomatic COVID-19 infections.

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  8. Life

    One hummingbird survives cold nights by nearly freezing stiff

    To survive a freezing night, hummingbirds in the Andes mountains go very still, slow their heart rate and let their body temperature plummet.

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  9. Genetics

    Gene editing can alter body fat and may fight diabetes

    Researchers have long dreamed of using brown fat to fight obesity and diabetes. Work in animals shows they’re closing in on achieving that dream.

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