HS-LS1-3
Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.
- Health & Medicine
New ultrasound treatment kills off cancer cells
Low-frequency ultrasound destroys cancer cells while leaving most healthy cells intact.
- Life
Here’s how butterfly wings keep cool in the sun
Butterfly wings sport structures that let living tissues release more heat than the rest of the wing.
- Health & Medicine
Excess weight alters results of blood tests in kids and teens
Carrying extra weight could affect many routine blood tests in kids, new data show. Knowing this might help doctors better interpret lab results.
- Health & Medicine
Explainer: What are allergies?
Sometimes the body’s immune system works too well, like a smoke alarm that blares every time you cook pizza. The results can range from uncomfortable to potentially life-threatening.
- Brain
Scientists’ brains shrank after a long stay in Antarctica
The isolation of a long-term mission at an Antarctic research station shrunk part of crew members’ brains, a small study suggests.
- Microbes
Globetrotting microbes in airplane sewage may spread antibiotic resistance
Along with harder-to-kill microbes, airplane sewage contains a diverse set of the genes that let bacteria evade antibiotics.
- Brain
As teens gain weight, they find high-fat foods less pleasurable
Teens who gained excess weight showed less activity in the brain’s reward center when viewing or tasting foods with lots of fat.
- Brain
Sleep may jumpstart the brain’s power washing system
Waves of fluid wash into the human brain during sleep. That’s good. They just may help clean out toxic proteins.
- Animals
Blood vessels in their heads kept big dinos from overheating
Giant dinosaurs evolved several ways to cool their blood and avoid heatstroke.
- Health & Medicine
Ultrasound might become a new way to manage diabetes
Ultrasound turns on production of the hormone insulin in mice. Someday, it might help maintain healthy blood-sugar levels in people who were recently diagnosed with diabetes.
- Health & Medicine
Explainer: The benefits of phlegm, mucus and snot
There are many types of mucus in the body. They might seem gross, but these gloppy goos are the first line of defense against infection.
- Health & Medicine
Explainer: What is the vagus?
The vagus nerve runs from the brain all through the body. It controls many basic functions, including how fast the heart beats.
