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.
HS-LS2-2
Use mathematical representations to support and revise explanations based on evidence about factors affecting biodiversity and populations in ecosystems of different scales.
More Stories in HS-LS2-2
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OceansOcean heat waves are on the rise — and killing coral
Ocean heat waves are becoming hotter and more frequent. And one can be blamed for the 2016 coral deaths on the Great Barrier Reef.
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Health & MedicineWhich 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.
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AnimalsIn a colony, king penguins act like a liquid
Is this a living liquid? King penguins move around within their colonies, clearing out some space, and then refilling it. That behavior resembles a liquid, scientists conclude.
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LifeFighting ‘like an animal’ may not be what you expect
Evolution has produced a broad range of conflict styles. And some of the best examples come from outside the world of the familiar.
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ChemistryCool Jobs: Diving for new medicines
Scientists mix research with underwater adventure as they search the oceans for new chemicals to treat infections, cancer and more.
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Health & MedicineAnalyze This: Flu vaccine’s protection varies
Getting a flu shot every year is an important way to protect yourself and those around you — even if the vaccine isn’t 100 percent effective.
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PlantsExplainer: 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.