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
Some air pollutants seep through skin
The skin is the body’s largest organ. And it can let in as much or more of certain air pollutants than enter through the lungs, a new study finds.
- Brain
New light on brain science
A combination of physics, biology and engineering lets scientists use light to trigger actions by specific brain cells. Called optogenetics, this technology is shining new light on how the brain works.
- Chemistry
These bubbles treat wounds
New research shows bubble-powered drugs can travel upstream, against the flow of blood, to seal wounds shut.
- Animals
Hummingbird tongues may be tiny pumps
Scientists had thought that hummingbird tongues work through capillary action. A new study, though, concludes they work like little pumps.
- Health & Medicine
New treatments may rally ex-president’s fight against cancer
Former President Jimmy Carter has a potentially lethal type of skin cancer that has already spread to his liver and brain. Recent improvements in medicine may help him fight it.
- Brain
Explainer: The nico-teen brain
Both e-cigarettes and tobacco products can release large amounts of nicotine during use. Nicotine is the chemical that makes tobacco addictive — and the teen brain is especially vulnerable to it.
- Animals
Picture This: The real ‘early bird’
Long before dinosaurs went extinct, birds were emerging on Earth. These hummingbird-size wading birds are the earliest known ancestors of today’s birds.
- Health & Medicine
Injected nanoparticles treat internal wounds
Soldiers wounded in a bombing could be treated with a shot of specially designed nanoparticles that stop bleeding and inflammation in the lungs.
- Health & Medicine
New virus may have given kids polio-like symptoms
More than 100 U.S. children developed a paralyzing illness in 2014. Genetic evidence now suggests that the most likely culprit is a new form of a virus in the polio family.
- Health & Medicine
Peanuts for baby: A way to avoid peanut allergy?
Making peanut products a baby food could head off life-threatening peanut allergies later, new data show.
- Health & Medicine
Vision-ary high tech
New devices are being developed to improve, restore or preserve the vision of people with eye diseases, such as glaucoma and macular degeneration. One device is a telescopic contact lens than can be zoomed with a wink.
- Health & Medicine
Scientists say: Inflammation
When cells are injured, they send out distress signals. The rescuing cells cause more blood to flow to the area, producing inflammation.
