HS-LS2-1
Use mathematical and/or computational representations to support explanations of factors that affect carrying capacity of ecosystems at different scales.
- 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.
- Climate
5 things to know about the climate-saving benefits of tree planting
A recent analysis of the benefits of massive efforts to plant more trees triggered a firestorm of controversy.
- Microbes
Drug-resistant germs kill some 35,000 Americans each year
The new mortality rate may be way low, some experts say. Also troubling are two new germs that have emerged as big and urgent threats.
- Health & Medicine
By the numbers: How infectious measles and other diseases spread
A number called R0 measures how contagious an infectious disease is. It helps explain why measles is so dangerous.
- Animals
Hunting hidden salamanders with eDNA
The Japanese clouded salamander is an elusive beast. To find a new population, three teens turned to high-tech methods.
- Oceans
Small swimmers may play huge role in churning the seas
Hoards of migrating shrimp and krill can cause large-scale water movements in the ocean, a new study suggests.
- Health & Medicine
Scientists discover how norovirus hijacks the gut
Noroviruses make people vomit, but scientists didn’t actually know why. It now turns out that those viruses cause their misery by attacking special “tuft” cells in the gut.
- Health & Medicine
Which bacteria hang out in belly buttons? Here’s a who’s who
Bacteria are everywhere — even in our belly buttons. One teen at Intel ISEF decided to find out what types people were harboring in their navels.
- Plants
Explainer: The fertilizing power of N and P
Two elements — nitrogen and phosphorus — help plants grow. When the soil doesn’t have them, farmers might add them in the form of fertilizer.
- Ecosystems
America’s duck lands: These ‘potholes’ are under threat
North America’s prairies are in trouble. Scientists race against the clock for clues about how to save the plants — and animals — that call it home.
- Science & Society
Shrimp on treadmills? Some science only sounds silly
Research that may seem silly, at first glance, often has a rewarding aim. Here are some examples.
- Animals
Under blanket of ice, lakes teem with life
Life under frozen lakes is vibrant, complex and surprisingly active, new research finds. In fact, some plants and animals can only live under the ice. But with climate change, will that continue?
