Health & Medicine
Explainer: What is sickle cell disease?
Gene mutations can alter an individual’s hemoglobin in ways that curl their blood cells. This can cause painful sickle cell disease.
HS-LS1-1
Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.
More Stories in HS-LS1-1
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AnimalsA new drug mix helps frogs regrow amputated legs
The treatment helped frogs grow working limbs useful for swimming, standing and kicking. It’ll be a while before people can do that.
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LifeScientists Say: Eukaryote
Eukaryotes are living things whose cells package their genetic material inside a pouch called a nucleus.
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GeneticsDNA in air can help ID unseen animals nearby
Analyzing these genetic residues in air offers a new way to study animals. It could give scientists a chance to monitor rare or hard to find animals.
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GeneticsExplainer: What is RNA?
A partner to DNA, cells use this molecule to translate the instructions for making all of the many proteins that your body needs to function.
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AnimalsEngineers surprised by the power of an elephant’s trunk
An elephant's trunk can suck air through it fast — at more than 335 miles per hour (150 meters per second)!
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PlantsScientists Say: Pollen
Pollen is a mass of tiny reproductive cells. These grains combine with egg cells to form seeds — but on the way, they can make some people miserable.
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Health & MedicineCool Jobs: Saliva offers a spitting image of our health
Scientists are using this secretion to study our body’s functions, to test for disease and even to diagnose injury.
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AnimalsScience and Indigenous history team up to help spirit bears
When scientists and Indigenous people work together, their efforts can benefit bears and people.
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GeneticsLet’s learn about DNA
DNA is made of two chemical chains twisted around each other. It stores information that allows cells to grow and function.