Researchers have figured out how to use artificial photonic materials to mimic the butterfly's attractive light show.
A mysterious butterfly-shaped cloud spotted over St. Louis last week was built from actual butterflies.
Contest yields a stunning array of pictures of nature in action.
Butterflies come in an almost unimaginable number of colors -- whether taking flight or resting on a leaf, the showy insects deserve a showcase.
Long known for using a type of solar compass in the brain, the insects can also migrate when skies are overcast, suggesting a magnetic compass.
A new way of texturing surfaces could make certain materials ultra-waterproof.
If a soldier suffers a serious brain injury from blast-exposure, a medic will know instantly just how serious the damage is to the affected area.