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Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.
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AnimalsScientists Say: Compound Eye
Compound eyes made up of many smaller visual structures may not produce crisp images, but they offer a great field of view.
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PhysicsThe movie Frozen inspired the icy, 3-D printing of blood vessels
Ice guides a 3-D printing method to make realistic, artificial blood vessels. One day, such vessels could be used in lab-grown organs.
By Sarah Wells -
Health & MedicineToo much noise can harm far more than our ears
Sure, loud or unwanted sounds can damage hearing. But they also can disrupt learning, stress us out and more.
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MicrobesWhat the weird world of protists can teach us about life on Earth
Microbes vastly outnumber multicellular life on Earth. A close-up look at protists highlights how much we don't know about the microscopic world.
By Susan Milius -
PlantsRampaging vines are slowly strangling tropical forests
Called lianas,these vines are growing out of control. They may cause tropical forests to absorb less carbon dioxide — worsening climate change.
By Douglas Fox -
TechBalsa wood transistors could usher in ‘greener’ electronics
Researchers in Sweden coaxed wood to conduct electricity, then used it to make a climate-friendlier building block of electronics.
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TechBits of trees can make and store energy for us to use
This cellulose and lignin, two major building blocks of trees, could lead to greener electronics.
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PlantsYoung corn leaves can ‘smell’ danger
As they mature, these leaves lose their ability to detect threatening scents.
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HumansSenses help the brain interpret our world — and our own bodies
Most people are familiar with sight, hearing, smell, taste and touch –– but there are others. Learn about them here.
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AnimalsScientists Say: Vertebrate
Animals with spines, or vertebrates, come in all shapes and sizes.
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LifeScientists Say: Mycelium
These fibrous networks are the reason plants think fungi are such "fun guys.”
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Health & MedicineHigh blood pressure can affect kids but often goes undiagnosed
Left untreated, it can lead to lasting problems, even in kids who appear otherwise healthy. Learn the signs and what to do.
By Erin Ross