HS-LS1-2
Develop and use a model to illustrate the hierarchical organization of interacting systems that provide specific functions within multicellular organisms.
- Brain
Could the magic of memory manipulation ever become real?
Someday, technology might be able to help people better hold onto memories or forget bad ones.
- Chemistry
Scientists Say: Absorb and Adsorb
These words sound and look a lot alike. But crucial differences lie in how they soak up that spill.
- Health & Medicine
Can you really die of a broken heart?
Death by heartbreak doesn't just happen in stories. In real life, severe stress can cause takotsubo syndrome — a sometimes fatal heart problem.
- Animals
A surprising number of animals eat poop
A new tally finds more than 150 vertebrate species willing to snack on feces. Eating poop offers nutrients and other benefits.
- Brain
Scientists are exploring why some people don’t have a mind’s eye
A researcher with aphantasia is studying how different senses work together in the brain — and when they don’t.
- Brain
Purple exists only in our brains
Most colors represent a single wavelength of light. But your brain invents purple to deal with wavelengths from opposite ends of the visible spectrum.
- Brain
A single sniff is enough to detect slight odor changes
The speed of our ability to perceive odors is on par with that of color perception, a new sniff device shows.
- Health & Medicine
U.S. teen tobacco use has hit a record low
In 2024, tobacco use among middle- and high-school students reached a record low. But new vapes and nicotine-based products keep coming.
- Brain
Scientists Say: Aphantasia
Not everyone has a “mind’s eye,” and that’s OK. Some people recall memories and process information in different ways altogether.
- Brain
Ouch! The pain of pulled hair registers superfast
A hair pull is detected by a protein used to sense light touches. It also travels faster than most other types of pain.
- Psychology
Analyze This: Skipping through videos may increase boredom
Contrary to what people often expect, fast-forwarding or switching videos may leave viewers more bored and less satisfied.
- Humans
Is synthetic food dye bad for kids? Here’s what the science says
California is banning some food dyes in school meals. Though FDA says the dyes are safe, some studies show they may alter kids’ behavior.
