MS-LS1-7
Develop a model to describe how food is rearranged through chemical reactions forming new molecules that support growth and/or release energy as this matter moves through an organism.
- Chemistry
Explainer: What are fats?
A fat molecule's three long chains of carbon and hydrogen atoms repel water, stash energy and keep living things warm — even in the bitter cold.
- Health & Medicine
Warning! Junk foods can harm a teen’s brain
The adolescent brain has a hard time resisting junk food. But high-fat, high-sugar diets can interfere with learning and pose risks to mental health.
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A dirty and growing problem: Too few toilets
As the famous book says, everybody poops. That’s 7.8 billion people, worldwide. For the 2.4 billion with no toilet, the process can be complicated.
- Health & Medicine
Our gut microbes love a good workout
Technology shows how microbes in the body respond to exercise. That helps scientists understand why those microbes keep athletes healthy.
- 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.
- Chemistry
Scientists look to hack photosynthesis for a ‘greener’ planet
Photosynthesis turns sunlight into energy for plants. Scientists want to know more about it, imitate it — even improve it.
- 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: What are proteins?
In the body, proteins act as biochemical machines to carry out the work of cells.
- Health & Medicine
Explainer: Taste and flavor are not the same
What’s behind a food’s flavor? More than what we taste, it turns out.
- Earth
Restaurant diners may ingest extra pollutants
People who dine out have higher levels of certain potentially harmful pollutants in their bodies than do people who eat home-cooked meals, new data show.
- Chemistry
Scientists Say: Catalyst
Sometimes a chemical reaction can take a while. If speed is needed, a catalyst can help.
- Health & Medicine
Your gut’s germs may decide whether white bread or whole wheat is best — for you
Surprise! Gut microbes may determine how your body responds to starches in the diet.
