HS-LS1-2
Develop and use a model to illustrate the hierarchical organization of interacting systems that provide specific functions within multicellular organisms.
- Physics
Here’s why your blood vessels don’t burst under pressure
Cells lining the blood vessels reorganize their inner structures to handle stressful boosts in pressure.
- Humans
After every soak, fingers wrinkle — and always the same way
Fingertip folds aren’t super swollen. Blood vessels constrict and pull skin inward, forming wrinkles.
- Brain
Mice show us why food poisoning is so hard to forget
Working with mice, scientists have mapped a brain pathway that links an unfamiliar flavor with later food poisoning symptoms.
- Animals
Captive-breeding axolotls may help avoid their extinction
The axolotl program's success shows promise in helping protect this highly popular amphibian — currently found in only one lake — from dying out in the wild.
- Animals
Teens work to keep giant water bugs on the menu
Many culinary cultures around the world prize these nutritious and flavorful insects. New approaches may help giant water bug farming efforts.
- Tech
This squirrel-like robot has some serious hops
Salto the jumping robot has a claw-like gripper. Like a squirrel, it can adjust its movement to help it stay balanced to stick a landing on "branches."
- Animals
Tick, tick, tick. In a first, a shark is heard making noise
The undersea world can host a symphony of fish grunts, hums and growls. Now add tooth-clacking sharks to the score.
- Health & Medicine
Two cities stopped water fluoridation. Kids’ teeth suffered
As calls to end fluoride in water get louder, worsening dental health in children of Calgary, Canada, and Juneau, Alaska, offer a cautionary tale.
- Brain
Brain cells that make you feel full also make you crave dessert
If you want a sweet treat when you feel full after a big meal, blame your brain. Tests in mice and people suggest that the same cells signal satiety and a hunger for sugar.
- Health & Medicine
Let’s learn about vaccines
These medical treatments have saved millions of lives and spared many others from seriously unpleasant infections.
- Animals
Sheep, llamas and goats fall for optical illusions too
These findings could help reveal when and why falling for optical illusions evolved in animals.
- Brain
Parakeets talk using brain areas similar to ours
Brain activity during vocalizing in small parrots — called budgerigars or parakeets — shows a similar pattern to what’s seen in people.
