HS-LS1-2
Develop and use a model to illustrate the hierarchical organization of interacting systems that provide specific functions within multicellular organisms.
- Health & Medicine
Simple test for cancer and heart disease
Disease diagnosis often requires expensive equipment and tests to probe deep inside the body. But a new test relies on a fast, cheap and easy technique. And its answers appear on a strip of paper — just as they do on a pregnancy test.
- Animals
Dissecting the dog paddle
Scientists occasionally describe the dog paddle as a “trot,” but that’s not right. When dogs swim, their complicated leg motions look more like a frantic run.
- Life
Explainer: What is a stem cell?
Special cells have ability to turn into several different types
- Brain
Explainer: Our bodies’ internal clocks
Biological clocks determine hunger, sleepiness and other daily rhythms.
- Health & Medicine
Blood does a body good
Studies of the superfluid aid in the prevention and treatment of diseases.
- Animals
Dolphin dimples detect electricity
Depressions in a dolphin’s snout sense electric fields, may help find dinner.
- Animals
Secrets of the world’s extreme divers
For emperor penguins and other animals, being able to hold their breath the longest could be in the blood
- Health & Medicine
Fat weighs heavy on the brain
New study shows obesity interferes with memory, thinking and reasoning.
- Animals
Eating can be skin deep
In the laboratory, bottom-dwelling hagfish absorb nutrients through the skin.
- Life
Full-body taste
Turns out that the tongue isn’t the only place where the body can taste what you ate.
- Plants
Carnivorous plants say ‘cheese’
It took high-speed cameras to reveal how the bladderwort gets lunch.
- Health & Medicine
A framework for growing bone
A promising new material could help encourage damaged or broken bones to grow back.
