All Stories by Kathryn Hulick
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AnimalsDo dogs have a sense of self?
Dogs don’t know their own reflections in a mirror, but they do recognize themselves from the scent of their own urine, a new study finds.
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AnimalsSome otters wear red algae
Some sea otters in California sport coats of red algae. A new study finds the species most likely is a non-native organism from half a world away.
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TechEngineers consider liquid salt to generate power
A new type of power plant, a molten salt reactor, might provide electricity in a cleaner and safer way than current nuclear technology.
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ChemistrySome 3-D printing can leave toxic taint
The ”ink” inside some 3-D printers can leave toxic traces. In tests, these chemicals harmed baby fish. But lighting could render the parts safer.
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MicrobesSlime cities
Biofilms are like tiny cities of bacteria — some harmless, others destructive. Scientists are learning how to keep these microscopic metropolises under control.
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AnimalsRare as a rhino
Most species are rare. Some have always been rare. A problem develops when people are responsible for accelerating a species’ rarity to the point that extinction threatens.
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PhysicsX-ray ‘eyes’
Movie directors often make “short” subjects, flicks running sometimes just a few minutes or so. But scientists have begun making much quicker “shorts,” essentially nanofilms. Their goal: catching science in action.