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
Explainer: What is asthma and how is it treated?
This chronic narrowing of lung airways can make it hard to breathe. Fortunately, drugs can widen those airways — even in people with severe asthma symptoms.
- Humans
Biological sex is more complex than just male or female
Trying to define sex with just two options fails to reflect the wide range of natural variation in human genetics, hormones and biology.
- Animals
Narwhals may use their enormous lance-like tusks to play
Video shows narwhals using their tusks to prod — even flip — fish they don’t target as prey. It’s the first reported evidence of these whales playing.
- Brain
Scientists Say: Neuroplasticity
Neurons in the brain forge new connections and sometimes trim back old ones. This capacity for change allows us to learn new skills and recover from injury.
- Plants
Could trees ever get up and walk away?
In fantasy, trees can walk, climb and even fight. Real trees move, too. It just happens in extreme slow mo.
- Health & Medicine
This Indigenous herb may improve therapy for muscle disorder
Treating weakened fruit flies with an herb-drug combo was more effective than the usual drug-only treatment.
- Animals
Among chimpanzees, peeing is contagious
One individual chimpanzee peeing prompts others to follow suit — but scientists don’t know why.
- Brain
Explainer: How our body deals with stress
Our autonomic nervous system balances two natural responses. If stressed or overwhelmed, simple techniques can help to restore that balance.
- Animals
Scientists Say: Caecilian
Some of these amphibians can produce a milk-like liquid for their offspring and give birth to live young. And those aren't the only rules these rebels break.
- Brain
Having sparse links in the hippocampus may maximize memory storage
Tissue from the memory centers of people’s brains reveal relatively few links among nerve cells in the hippocampus. But they carried strong, reliable signals.
- Science & Society
Viewing math as a language might help it make sense to more of us
It might also reduce the anxiety associated with using math, allowing people to better answer a host of important everyday questions.
- 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.
