HS-LS1-2
Develop and use a model to illustrate the hierarchical organization of interacting systems that provide specific functions within multicellular organisms.
- Humans
Let’s learn about adrenaline
In short bursts, this hormone can help you face your fears. But in the long run, too much of it can be unhealthy.
- Animals
This tool-using cow stunned scientists with her smarts
Veronika the cow scratches hard-to-reach body parts using a brush. This feat is forcing scientists to rethink which animals can use tools.
- Animals
Flat-faced dogs often struggle to breathe easy
Pugs and bulldogs aren’t the only dogs with breathing problems. Pekingese, Japanese chins and other squish-faced breeds have this issue, too.
- Animals
Wind won’t keep hungry yellow jackets away from your picnic
Hungry yellow jackets are really good at tracking attractive odors. Even in windy and difficult conditions, they can find your barbecue.
- Microbes
Analyze This: Which cells are the speediest?
The cellular Olympics would be an amazing spectacle. Some cells move at mind-boggling speeds by jumping, gliding, swimming, expanding or shrinking.
- Health & Medicine
Got brain rot?
Excessive scrolling through social media or viral videos can mess with your mental health — and possibly alter your brain’s development, studies show.
- Science & Society
Stressed by tech? Here’s how to find help
This checklist can help you assess and improve your experiences — and your mental health.
- Science & Society
Large numbers of underage kids are on social media, study finds
Two in every three kids aged 8 to 12 have already been on social media, and one-tenth have been bullied there. Some kids report other bad experiences too.
- Animals
A bonobo’s imaginary tea party hints that apes can pretend
Kanzi would sometimes play with imaginary juice and grapes, just as humans might. The bonobo's ability challenges old ideas about how animals think.
- Animals
Let’s learn about animals that can regrow body parts
Animals that regenerate limbs, eyes and other body parts may hold clues to superhuman healing.
- Brain
Adolescence appears to last far longer than once thought
The brain undergoes “rewiring” throughout adolescence and doesn’t reach its adult architecture until our early 30s, suggests a new study.
- Health & Medicine
Scientists Say: Symptom
A runny nose, fever or feeling of fatigue might clue your doctor in to the right diagnosis.
