MS-LS2-2
Construct an explanation that predicts patterns of interactions among organisms across multiple ecosystems.
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AnimalsScientists Say: Crepuscular
Day creatures are diurnal. Night creatures are nocturnal. Animals active at twilight get a special name.
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Health & MedicineU.S. mosquitoes now spreading Zika virus
Scientists had worried that if people sick with Zika came to America, local mosquitoes might bite them and spread the disease. That’s now happened.
By Meghan Rosen -
Health & MedicineScientists Say: Poisonous
A poison-arrow frog is poisonous, but a rattlesnake is not. What’s the difference? It’s how the poison is delivered.
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Health & MedicineZika vaccines look promising
As a Zika epidemic surges through Brazil and northward, scientists are looking for drugs to keep more people from becoming infected. Several vaccines show promise in early tests — but none has yet been tried in people.
By Meghan Rosen -
ChemistryScientists Say: Toxin
It is safe to refer to any poison as toxic. But while all toxins are poisonous, most poisons are not toxins.
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AnimalsLeapin’ eels! Video shows they attack with zaps
When a predator threatens an electric eel from above, the animals leap up to deliver a shocking defense.
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Ink leads way to terminating termites
Inspired by a classroom experiment, a teen has built a way to lure troublesome termites to their death — using the power of ink.
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PhysicsGravity waves are seen again
Four months after scientists announced the first detection of gravity waves, another set of ripples in spacetime have emerged. The new ones come from the clash of mid-size black holes in the distant universe.
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AnimalsCatching ‘Dory’ fish can poison entire coral reef ecosystems
More than half of saltwater-aquarium fish sold in the United States may have been caught in the wild using cyanide, new data show.
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AnimalsWhy some frogs can survive killer fungal disease
A disease is wiping out amphibian species around the globe. New research shows how some frogs develop immunity.
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AnimalsScientists Say: Copepod
Copepods are tiny crustaceans. They eat phytoplankton and float in the water column, although some live in freshwater and on the sea floor.
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AnimalsSpiders eat insects — and sometimes veggies
Plant-eating spiders have been found on every continent except Antarctica, a new study notes.