'Matador' guppies trick predators

Trinidadian guppies behave like matadors, focusing a predator's point of attack before dodging away at the last moment, new research shows.

Nanoparticles could someday give humans built-in night vision

Movies featuring heroes with superpowers, such as flight, X-ray vision or extraordinary strength, are all the rage. But while these popular characters are mere flights of fancy, scientists have used nanoparticles to confer ...

Miniaturized infrared cameras take colored photos of the eye

Look into one's eye and you might be able to see their soul—or at least you can see signs of a stroke or diabetes. By looking at the blood vessels in the eyes, doctors can tell a lot about a person's health. This can be ...

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